citation for this research

Scribbr APA Reference Generator

Accurate APA citations, verified by experts, trusted by millions.

Save hours of repetitive work.

Stop wasting hours figuring out the correct citation format. With Scribbr, you can search for your source by title, URL, ISBN, or DOI and generate accurate APA references in seconds. No experience needed.

Rely on accurate citations, verified by experts.

You don’t want points taken off for incorrect citations. That’s why our APA reference experts have invested countless hours perfecting our algorithms. As a result, we’re proud to be recommended by teachers worldwide.

Enjoy a clean look for minimal distraction.

Staying focused is already challenging enough. You don’t need video pop-ups and flickering banner ads slowing you down. At Scribbr, we keep distractions to a minimum while also keeping the tool free for everyone.

Features you'll love

Search for your source by title, URL, DOI, ISBN, and more to retrieve the relevant information automatically.

APA 6th & 7th edition

Whether you’re still using APA 6 or you’ve already switched to APA 7 , we’ve got you covered!

Export to Bib(La)TeX

Easily export in BibTeX format and continue working in your favourite LaTeX editor.

Export to Word

Reference list finished? Export to Word with perfect indentation and spacing set up for you.

Sorting, grouping, and filtering

Organise the reference list the way you want: from A to Z, new to old, or grouped by source type.

Save multiple lists

Stay organised by creating a separate reference list for each of your assignments.

Choose between Times New Roman, Arial, Calibri, and more options to match your style.

Industry-standard technology

Scribbr is built using the same citation software (CSL) as Mendeley and Zotero, but with an added layer for improved accuracy.

Annotations

Create perfectly formatted annotated bibliographies with just a few clicks.

Explanatory tips help you get the details right to ensure accurate citations.

Citation guides

Getting to grips with citation is simple with the help of our highly rated APA reference  guides and videos .

Secure backup

Your work is saved automatically after every change and stored securely in your Scribbr account.

• Introduction
• Parenthetical vs. narrative
• Multiple authors

Missing information

• Sources to include

Tools and resources

• Scroll to top

APA referencing guidelines

APA Style is widely used by students, researchers, and professionals in the social and behavioral sciences. The Scribbr APA Reference Generator automatically generates accurate references and in-text citations for free.

This referencing guide outlines the most important referencing guidelines from the 7th edition APA Publication Manual (2020). Scribbr also offers free guides for the older APA 6th edition , Vancouver Style , and Harvard Style .

APA in-text citations

In-text citations are brief references in the running text that direct readers to the full reference entry at the end of the paper. You include them every time you quote or paraphrase someone else’s ideas or words.

An APA in-text citation consists of the author’s last name and the year of publication (also known as the author-date system). If you’re citing a specific part of a source, you should also include a locator such as a page number or timestamp. For example: (Smith, 2020, p. 170) .

Parenthetical vs. narrative citation

The in-text citation can take two forms: parenthetical and narrative. Both types are generated automatically when citing a source with Scribbr’s APA Citation Generator.

• Parenthetical citation: According to new research … (Smith, 2020) .
• Narrative citation: Smith (2020) notes that …

Multiple authors and corporate authors

The in-text citation changes slightly when a source has multiple authors or an organization as an author. Pay attention to punctuation and the use of the ampersand (&) symbol.

When the author, publication date or locator is unknown, take the steps outlined below.

APA Referencing Generator

Generate accurate APA style references in seconds

Get started

APA references

APA references generally include information about the author , publication date , title , and source . Depending on the type of source, you may have to include extra information that helps your reader locate the source.

Generate APA references for free

It is not uncommon for certain information to be unknown or missing, especially with sources found online. In these cases, the reference is slightly adjusted.

Formatting the APA reference page

On the first line of the page, write the word “References” (in bold and centered). On the second line, start listing your references in alphabetical order .

Apply these formatting guidelines to the APA reference page:

• Double spacing (within and between references)
• Hanging indent of ½ inch
• Legible font (e.g. Times New Roman 12 or Arial 11)
• Page number in the top right header

Which sources to include

On the reference page, you only include sources that you have cited in the text (with an in-text citation ). You should not include references to personal communications that your reader can’t access (e.g. emails, phone conversations or private online material).

In addition to the APA Reference Generator, Scribbr provides many more tools and resources that help millions of students and academics every month.

• Citation Checker : Upload your paper and have artificial intelligence check your citations for errors and inconsistencies.
• Free plagiarism checker : Detect, understand, and resolve plagiarism by comparing your paper with billions of sources.
• Proofreading services : Have a professional editor (or team of editors) improve your writing so you can submit your paper with pride and confidence.
• Guides and videos : Explore hundreds of articles, bite-sized videos, time-saving templates, and handy checklists that guide you through the process of research, writing, and citation.

• Plagiarism and grammar
• School access

The best papers start with EasyBib®

Powered by chegg.

Start a new citation or manage your existing projects.

Scan your paper for plagiarism and grammar errors.

Check your paper for grammar and plagiarism

Catch plagiarism and grammar mistakes with our paper checker

Wipe out writing errors with EasyBib® Plus

Double check for plagiarism mistakes and advanced grammar errors before you turn in your paper.

• expert check

Know you're citing correctly

No matter what citation style you're using (APA, MLA, Chicago, etc.) we'll help you create the right bibliography

Check for unintentional plagiarism

Scan your paper the way your teacher would to catch unintentional plagiarism. Then, easily add the right citation

Strengthen your writing

Give your paper an in-depth check. Receive feedback within 24 hours from writing experts on your paper's main idea, structure, conclusion, and more.

Find and fix grammar errors

Don't give up sweet paper points for small mistakes. Our algorithms flag grammar and writing issues and provide smart suggestions

EasyBib® Guides & Resources

Mla format guide.

This is the total package when it comes to MLA format. Our easy to read guides come complete with examples and step-by-step instructions to format your full and in-text citations, paper, and works cited in MLA style. There’s even information on annotated bibliographies.

Works Cited | In-Text Citations | Bibliography | Annotated Bibliography | Website | Book | Journal | YouTube | View all MLA Citation Examples

APA Format Guide

Get the facts on citing and writing in APA format with our comprehensive guides. Formatting instructions, in-text citation and reference examples, and sample papers provide you with the tools you need to style your paper in APA.

Reference Page | In-Text Citations | Annotated Bibliography | Website | Books | Journal | YouTube | View all APA citation Examples

Chicago Format Guide

Looking to format your paper in Chicago style and not sure where to start? Our guide provides everything you need! Learn the basics and fundamentals to creating references and footnotes in Chicago format. With numerous examples and visuals, you’ll be citing in Chicago style in no time.

Footnotes | Website | Book | Journal

Harvard Referencing Guide

Learn the requirements to properly reference your paper in Harvard style. The guides we have provide the basics and fundamentals to give credit to the sources used in your work.

In-Text Citations | Books | Article | YouTube | View all Harvard Referencing Examples

Check Your Paper

Avoid common grammar mistakes and unintentional plagiarism with our essay checker. Receive personalized feedback to help identify citations that may be missing, and help improve your sentence structure, punctuation, and more to turn in an error-free paper.

Grammar Check | Plagiarism Checker | Spell Check

Learn From Our Innovative Blog

Our blog features current and innovative topics to keep you up to speed on citing and writing. Whether you’re an educator, student, or someone who lives and breathes citations (it’s not as uncommon as you might think!), our blog features new and exciting articles to discover and learn from.

Looking for Other Tools and Resources?

Our Writing Center is jam-packed with tons of exciting resources. Videos, infographics, research guides, and many other citation-related resources are found here. Check it out to find what you need to succeed!

• EasyBib® Plus
• Citation Guides
• Chicago Style Format
• Terms of Use
• Global Privacy Policy
• Cookie Notice
• DO NOT SELL MY INFO

• Free Tools for Students
• MLA Citation Generator

Free MLA Citation Generator

Generate accurate citations in MLA format automatically, with MyBib!

😕 What is an MLA Citation Generator?

An MLA citation generator is a software tool designed to automatically create academic citations in the Modern Language Association (MLA) citation format. The generator will take information such as document titles, author, and URLs as in input, and output fully formatted citations that can be inserted into the Works Cited page of an MLA-compliant academic paper.

The citations on a Works Cited page show the external sources that were used to write the main body of the academic paper, either directly as references and quotes, or indirectly as ideas.

👩‍🎓 Who uses an MLA Citation Generator?

MLA style is most often used by middle school and high school students in preparation for transition to college and further education. Ironically, MLA style is not actually used all that often beyond middle and high school, with APA (American Psychological Association) style being the favored style at colleges across the country.

It is also important at this level to learn why it's critical to cite sources, not just how to cite them.

🙌 Why should I use a Citation Generator?

Writing citations manually is time consuming and error prone. Automating this process with a citation generator is easy, straightforward, and gives accurate results. It's also easier to keep citations organized and in the correct order.

The Works Cited page contributes to the overall grade of a paper, so it is important to produce accurately formatted citations that follow the guidelines in the official MLA Handbook .

⚙️ How do I use MyBib's MLA Citation Generator?

It's super easy to create MLA style citations with our MLA Citation Generator. Scroll back up to the generator at the top of the page and select the type of source you're citing. Books, journal articles, and webpages are all examples of the types of sources our generator can cite automatically. Then either search for the source, or enter the details manually in the citation form.

The generator will produce a formatted MLA citation that can be copied and pasted directly into your document, or saved to MyBib as part of your overall Works Cited page (which can be downloaded fully later!).

MyBib supports the following for MLA style:

Daniel is a qualified librarian, former teacher, and citation expert. He has been contributing to MyBib since 2018.

• Directories
• What are citations and why should I use them?
• When should I use a citation?
• Why are there so many citation styles?
• Which citation style should I use?
• Chicago Notes Style
• Chicago Author-Date Style
• AMA Style (medicine)
• Bluebook (law)
• Additional Citation Styles
• Built-in Citation Tools
• Quick Citation Generators
• Citation Management Software
• Start Your Research
• Research Guides
• University of Washington Libraries
• Library Guides
• UW Libraries
• Citing Sources

Citing Sources: What are citations and why should I use them?

What is a citation.

Citations are a way of giving credit when certain material in your work came from another source. It also gives your readers the information necessary to find that source again-- it provides an important roadmap to your research process. Whenever you use sources such as books, journals or websites in your research, you must give credit to the original author by citing the source. 

Why do researchers cite?

Scholarship is a conversation  and scholars use citations not only to  give credit  to original creators and thinkers, but also to  add strength and authority  to their own work.  By citing their sources, scholars are  placing their work in a specific context  to show where they “fit” within the larger conversation.  Citations are also a great way to  leave a trail  intended to help others who may want to explore the conversation or use the sources in their own work.

In short, citations

(1) give credit

(2) add strength and authority to your work

(3) place your work in a specific context

(4) leave a trail for other scholars

"Good citations should reveal your sources, not conceal them. They should honeslty reflect the research you conducted." (Lipson 4)

Lipson, Charles. "Why Cite?"  Cite Right: A Quick Guide to Citation Styles--MLA, APA, Chicago, the Sciences, Professions, and More . Chicago: U of Chicago, 2006. Print.

What does a citation look like?

Different subject disciplines call for citation information to be written in very specific order, capitalization, and punctuation. There are therefore many different style formats. Three popular citation formats are MLA Style (for humanities articles) and APA or Chicago (for social sciences articles).

MLA style (print journal article):  

Whisenant, Warren A. "How Women Have Fared as Interscholastic Athletic Administrators Since the Passage of Title IX." Sex Roles Vol. 49.3 (2003): 179-182.

APA style (print journal article):

Whisenant, W. A. (2003) How Women Have Fared as Interscholastic Athletic Administrators Since the Passage of Title IX. Sex Roles , 49 (3), 179-182.

Chicago style (print journal article):

Whisenant, Warren A. "How Women Have Fared as Interscholastic Athletic Administrators Since the Passage of Title IX." Sex Roles 49, no. 3 (2003): 179-182.

No matter which style you use, all citations require the same basic information:

• Author or Creator
• Container (e.g., Journal or magazine, website, edited book)
• Date of creation or publication
• Publisher 

You are most likely to have easy access to all of your citation information when you find it in the first place. Take note of this information up front, and it will be much easier to cite it effectively later.

• << Previous: Basics of Citing
• Next: When should I use a citation? >>
• Last Updated: May 1, 2024 12:48 PM
• URL: https://guides.lib.uw.edu/research/citations

Purdue Online Writing Lab Purdue OWL® College of Liberal Arts

Research and Citation Resources

Welcome to the Purdue OWL

This page is brought to you by the OWL at Purdue University. When printing this page, you must include the entire legal notice.

Copyright ©1995-2018 by The Writing Lab & The OWL at Purdue and Purdue University. All rights reserved. This material may not be published, reproduced, broadcast, rewritten, or redistributed without permission. Use of this site constitutes acceptance of our terms and conditions of fair use.

If you are having trouble locating a specific resource please visit the  search page  or the  Site Map . The Citation Chart  provides a detailed overview of MLA Style, APA Style, and Chicago Manual of Style source documentation by category.

Conducting Research

These OWL resources will help you conduct research using primary source methods, such as interviews and observations, and secondary source methods, such as books, journals, and the Internet. This area also includes materials on evaluating research sources.

Using Research

These OWL resources will help you use the research you have conducted in your documents. This area includes material on quoting and paraphrasing your research sources, as well as material on how to avoid plagiarism.

APA Style (7th Edition)

These OWL resources will help you learn how to use the American Psychological Association (APA) citation and format style. This section contains resources on in-text citation and the References page, as well as APA sample papers, slide presentations, and the APA classroom poster.

These OWL resources will help you learn how to use the Modern Language Association (MLA) citation and format style. This section contains resources on in-text citation and the Works Cited page, as well as MLA sample papers, slide presentations, and the MLA classroom poster

Chicago Manual of Style

This section contains information on the Chicago Manual of Style method of document formatting and citation. These resources follow the 17th edition of the Chicago Manual of Style, which was issued in 2017.

Institute of Electrical and Electronics Engineers (IEEE) Style

These resources describe how to structure papers, cite sources, format references, and handle the complexities of tables and figures according to the latest Institute of Electrical and Electronics Engineers (IEEE) guidelines.

American Medical Association (AMA) Style

These resources provide guidance on how to cite sources using American Medical Association (AMA) Style, 10th Ed., including examples for print and electronic sources.

Research Overview

We live in an age overflowing with sources of information. With so many information sources at our fingertips, knowing where to start, sorting through it all and finding what we want can be overwhelming! This handout provides answers to the following research-related questions: Where do I begin? Where should I look for information? What types of sources are available?

Conducting Primary Research

Primary research involves collecting data about a given subject directly from the real world. This section includes information on what primary research is, how to get started, ethics involved with primary research and different types of research you can do. It includes details about interviews, surveys, observations, and analysis.

Evaluating Sources of Information

Evaluating sources of information is an important step in any research activity. This section provides information on evaluating bibliographic citations, aspects of evaluation, reading evaluation, print vs. online sources, and evaluating Internet sources.

Searching Online

This section covers finding information online. It includes information about search engines, Boolean operators, Web directories, and the invisible Web. It also includes an extensive, annotated links section.

Internet References

This page contains links and short descriptions of writing resources including dictionaries, style manuals, grammar handbooks, and editing resources. It also contains a list of online reference sites, indexes for writers, online libraries, books and e-texts, as well as links to newspapers, news services, journals, and online magazines.

Archival Research

This resource discusses conducting research in a variety of archives. It also discusses a number of considerations and best practices for conducting archival research.

This resources was developed in consultation with Purdue University Virginia Kelly Karnes Archives and Special Collections staff.

• Plagiarism and grammar
• Citation guides

Cite a Website

Don't let plagiarism errors spoil your paper, citing a website in apa.

Once you’ve identified a credible website to use, create a citation and begin building your reference list. Citation Machine citing tools can help you create references for online news articles, government websites, blogs, and many other website! Keeping track of sources as you research and write can help you stay organized and ethical. If you end up not using a source, you can easily delete it from your bibliography. Ready to create a citation? Enter the website’s URL into the search box above. You’ll get a list of results, so you can identify and choose the correct source you want to cite. It’s that easy to begin!

If you’re wondering how to cite a website in APA, use the structure below.

Author Last Name, First initial. (Year, Month Date Published). Title of web page . Name of Website. URL

Example of an APA format website:

Austerlitz, S. (2015, March 3). How long can a spinoff like ‘Better Call Saul’ last? FiveThirtyEight. http://fivethirtyeight.com/features/how-long-can-a-spinoff-like-better-call-saul-last/

Keep in mind that not all information found on a website follows the structure above. Only use the Website format above if your online source does not fit another source category. For example, if you’re looking at a video on YouTube, refer to the ‘YouTube Video’ section. If you’re citing a newspaper article found online, refer to ‘Newspapers Found Online’ section. Again, an APA website citation is strictly for web pages that do not fit better with one of the other categories on this page.

Social media:

When adding the text of a post, keep the original capitalization, spelling, hashtags, emojis (if possible), and links within the text.

Facebook posts:

Structure: Facebook user’s Last name, F. M. (Year, Monday Day of Post). Up to the first 20 words of Facebook post [Source type if attached] [Post type]. Facebook. URL

Source type examples: [Video attached], [Image attached]

Post type examples: [Status update], [Video], [Image], [Infographic]

Gomez, S. (2020, February 4). Guys, I’ve been working on this special project for two years and can officially say Rare Beauty is launching in [Video]. Facebook. https://www.facebook.com/Selena/videos/1340031502835436/

Life at Chegg. (2020, February 7) It breaks our heart that 50% of college students right here in Silicon Valley are hungry. That’s why Chegg has [Images attached] [Status update]. Facebook. https://www.facebook.com/LifeAtChegg/posts/1076718522691591

Twitter posts:

Structure: Account holder’s Last name, F. M. [Twitter Handle]. (Year, Month Day of Post). Up to the first 20 words of tweet [source type if attached] [Tweet]. Twitter. URL

Source type examples: [Video attached], [Image attached], [Poll attached]

Example: Edelman, J. [Edelman11]. (2018, April 26). Nine years ago today my life changed forever. New England took a chance on a long shot and I’ve worked [Video attached] [Tweet]. Twitter. https://twitter.com/Edelman11/status/989652345922473985

Instagram posts:

APA citation format: Account holder’s Last name, F. M. [@Instagram handle]. (Year, Month Day). Up to the first 20 words of caption [Photograph(s) and/or Video(s)]. Instagram. URL

Example: Portman, N. [@natalieportman]. (2019, January 5). Many of my best experiences last year were getting to listen to and learn from so many incredible people through [Videos]. Instagram. https://www.instagram.com/p/BsRD-FBB8HI/?utm_source=ig_web_copy_link

If this guide hasn’t helped solve all of your referencing questions, or if you’re still feeling the need to type “how to cite a website APA” into Google, then check out our APA citation generator on CitationMachine.com, which can build your references for you!

Featured links:

APA Citation Generator  |  Website   | Books | Journal Articles | YouTube | Images | Movies | Interview | PDF

• Citation Machine® Plus
• Citation Guides
• Chicago Style
• Harvard Referencing
• Terms of Use
• Global Privacy Policy
• Cookie Notice
• DO NOT SELL MY INFO

HIST 2110 Gade Summer 2024

• Let's Research!
• Library Catalog
• MLA Citation Guidelines
• Tutoring at Decatur

Citation Resources

- BibMe Film Citations Guide

- GSU MLA Citation Guide

- MLA Style Center Citation Guide

- Purdue OWL (Online Writing Lab)

MLA Works Cited Page Basics

From the purdue owl -.

• Begin your Works Cited page on a separate page at the end of your research paper. It should have the same one-inch margins and last name, page number header as the rest of your paper.
• Only the title should be centered. The citation entries themselves should be aligned with the left margin.
• Double space all citations, but do not skip spaces between entries.
• Indent the second and subsequent lines of citations by 0.5 inches to create a hanging indent.
• List page numbers of sources efficiently, when needed. If you refer to a journal article that appeared on pages 225 through 250, list the page numbers on your Works Cited page as pp. 225-50 (Note: MLA style dictates that you should omit the first sets of repeated digits. In our example, the digit in the hundreds place is repeated between 2 25 and 2 50, so you omit the 2 from 250 in the citation: pp. 225-50). If the excerpt spans multiple pages, use “pp.”   Note that MLA style uses a hyphen in a span of pages.
• If only one page of a print source is used, mark it with the abbreviation “p.” before the page number (e.g., p.157). If a span of pages is used, mark it with the abbreviation “pp.” before the page number (e.g., pp.157-68).
• If you're citing an article or a publication that was originally issued in print form but that you retrieved from an online database, you should type the online database name in italics. You do not need to provide subscription information in addition to the database name.

MLA In-Text Citing Basics

Two types of non-print sources you may encounter are films and lectures/presentations:

In the two examples above “Herzog” (a film’s director) and “Yates” (a presenter) lead the reader to the first item in each citation’s respective entry on the Works Cited page:

Herzog, Werner, dir. Fitzcarraldo . Perf. Klaus Kinski. Filmverlag der Autoren, 1982.

Yates, Jane. "Invention in Rhetoric and Composition." Gaps Addressed: Future Work in Rhetoric and Composition, CCCC, Palmer

     House Hilton, 2002. Address.

Citing Films or Movies

List films by their title. include the name of the director, the film studio or distributor, and the release year. if relevant, list performer names after the director's name..

Speed Racer . Directed by Lana Wachowski and Lilly Wachowski, performances by Emile Hirsch, Nicholas Elia, Susan Sarandon, Ariel

     Winter, and John Goodman, Warner Brothers, 2008.

To emphasize specific performers or directors, begin the citation with the name of the desired performer or director, followed by the appropriate title for that person.

Lucas, George, director. Star Wars Episode IV: A New Hope . Twentieth Century Fox, 1977.

• << Previous: Databases
• Next: Tutoring at Decatur >>
• Last Updated: Jun 21, 2024 4:27 PM
• URL: https://research.library.gsu.edu/HIST2110GadeSummer2024

• Download PDF
• Share X Facebook Email LinkedIn
• Permissions

A Clinical Diagnostic Test for Calcium Release Deficiency Syndrome

• 1 Libin Cardiovascular Institute, Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
• 2 Section of Cardiac Electrophysiology, Division of Cardiology, Department of Medicine, Hamilton Health Sciences and McMaster University, Hamilton, Ontario, Canada
• 3 Jesselson Integrated Heart Center, Eisenberg R&D Authority, Shaare Zedek Medical Center, and Hebrew University Faculty of Medicine, Jerusalem, Israel
• 4 Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, England
• 5 Oxford Heart Centre, John Radcliffe Hospital, Oxford, England
• 6 Department of Cardiology, Faculty of Medicine and Health Sciences, Antwerp University Hospital, Antwerp, Belgium
• 7 Cardiovascular Research, Departments of Genetics, Pharmacology and Physiopathology of Heart, Blood Vessels and Skeleton, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
• 8 Member of the European Reference Network for Rare, Low Prevalence, and Complex Diseases of the Heart (ERN GUARD-Heart)
• 9 Department of Clinical Cardiology, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
• 10 Heart Failure and Arrhythmias, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
• 11 Section of Cardiac Electrophysiology, Division of Cardiology, Department of Medicine, Western University, London, Ontario, Canada
• 12 Montreal Heart Institute and Université de Montréal, Montreal, Quebec, Canada
• 13 Department of Cardiology, Aarhus University Hospital, Aarhus N, Denmark
• 14 Institut Universitaire de Cardiologie et de Pneumologie de Québec, Laval University, Quebec City, Quebec, Canada
• 15 Department of Cardiac Pacing and Electrophysiology, Hopital Cardiologique du Haut-Leveque, Centre Hospitalier Universitaire de Bordeaux, Pessac, France
• 16 Division of Cardiology and Centre for Cardiovascular Innovation, University of British Columbia, Vancouver, Canada
• 17 Department of Molecular Cardiology, IRCCS Istituti Clinici Scientifici Maugeri, Pavia, Italy
• 18 Department of Molecular Medicine, University of Pavia, Pavia, Italy
• 19 Windland Smith Rice Genetic Heart Rhythm Clinic, Division of Heart Rhythm Services, Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota
• 20 Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota
• 21 Section of Cardiac Electrophysiology, Division of Cardiology, University of Washington Medical Center, Seattle
• 22 Population Health Research Institute, Hamilton Health Sciences, Hamilton, Ontario, Canada
• 23 Section of Cardiac Electrophysiology, Division of Cardiology, Department of Medicine, University of California, San Francisco
• 24 Windland Smith Rice Sudden Death Genomics Laboratory, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota
• 25 Division of Pediatric Cardiology, Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota
• 26 Inherited Arrhythmia and Cardiomyopathy Program, Arrhythmia Service, Division of Cardiology, Toronto General Hospital and the University of Toronto, Toronto, Ontario, Canada
• 27 Leviev Heart Institute, Chaim Sheba Medical Center, Ramat Gan, Israel
• 28 Tel Aviv University, Tel Aviv, Israel
• 29 Oxford Biomedical Research Centre and Wellcome Centre for Human Genetics, University of Oxford, Oxford, England
• 30 Department of Clinical Medicine, Aarhus University, Aarhus C, Denmark
• 31 Heart Institute, Hadassah University Hospital, Jerusalem, Israel
• Editor's Note Clinical Test for Calcium Release Deficiency Syndrome? Gregory M. Marcus, MD, MAS; Gregory Curfman, MD; Kirsten Bibbins-Domingo, PhD, MD, MAS JAMA

Question   Cardiac arrest frequently occurs without explanation, even after a thorough clinical evaluation. Can a simple maneuver clinically diagnose calcium release deficiency syndrome (CRDS), a newly described cause of sudden death?

Findings   In this international, multicenter, case-control study, a provoked measure of T-wave amplitude on an electrocardiogram ascertained cases of CRDS with high accuracy. The genetic mouse models recapitulated the human findings and suggested a pathologically large systolic calcium release from the sarcoplasmic reticulum was responsible.

Meaning   These preliminary results suggest that the repolarization response on an electrocardiogram to brief tachycardia followed by a pause may effectively diagnose CRDS. Given the frequency of unexplained cardiac arrest, should these findings be confirmed in larger studies, this readily available maneuver may provide clinically actionable information.

Importance   Sudden death and cardiac arrest frequently occur without explanation, even after a thorough clinical evaluation. Calcium release deficiency syndrome (CRDS), a life-threatening genetic arrhythmia syndrome, is undetectable with standard testing and leads to unexplained cardiac arrest.

Objective   To explore the cardiac repolarization response on an electrocardiogram after brief tachycardia and a pause as a clinical diagnostic test for CRDS.

Design, Setting, and Participants   An international, multicenter, case-control study including individual cases of CRDS, 3 patient control groups (individuals with suspected supraventricular tachycardia; survivors of unexplained cardiac arrest [UCA]; and individuals with genotype-positive catecholaminergic polymorphic ventricular tachycardia [CPVT]), and genetic mouse models (CRDS, wild type, and CPVT were used to define the cellular mechanism) conducted at 10 centers in 7 countries. Patient tracings were recorded between June 2005 and December 2023, and the analyses were performed from April 2023 to December 2023.

Intervention   Brief tachycardia and a subsequent pause (either spontaneous or mediated through cardiac pacing).

Main Outcomes and Measures   Change in QT interval and change in T-wave amplitude (defined as the difference between their absolute values on the postpause sinus beat and the last beat prior to tachycardia).

Results   Among 10 case patients with CRDS, 45 control patients with suspected supraventricular tachycardia, 10 control patients who experienced UCA, and 3 control patients with genotype-positive CPVT, the median change in T-wave amplitude on the postpause sinus beat (after brief ventricular tachycardia at ≥150 beats/min) was higher in patients with CRDS ( P  < .001). The smallest change in T-wave amplitude was 0.250 mV for a CRDS case patient compared with the largest change in T-wave amplitude of 0.160 mV for a control patient, indicating 100% discrimination. Although the median change in QT interval was longer in CRDS cases ( P  = .002), an overlap between the cases and controls was present. The genetic mouse models recapitulated the findings observed in humans and suggested the repolarization response was secondary to a pathologically large systolic release of calcium from the sarcoplasmic reticulum.

Conclusions and Relevance   There is a unique repolarization response on an electrocardiogram after provocation with brief tachycardia and a subsequent pause in CRDS cases and mouse models, which is absent from the controls. If these findings are confirmed in larger studies, this easy to perform maneuver may serve as an effective clinical diagnostic test for CRDS and become an important part of the evaluation of cardiac arrest.

• Editor's Note Clinical Test for Calcium Release Deficiency Syndrome? JAMA

Read More About

Ni M , Dadon Z , Ormerod JOM, et al. A Clinical Diagnostic Test for Calcium Release Deficiency Syndrome. JAMA. Published online June 20, 2024. doi:10.1001/jama.2024.8599

Manage citations:

© 2024

Artificial Intelligence Resource Center

Cardiology in JAMA : Read the Latest

Browse and subscribe to JAMA Network podcasts!

Others Also Liked

Select your interests.

Customize your JAMA Network experience by selecting one or more topics from the list below.

• Academic Medicine
• Acid Base, Electrolytes, Fluids
• Allergy and Clinical Immunology
• American Indian or Alaska Natives
• Anesthesiology
• Anticoagulation
• Art and Images in Psychiatry
• Artificial Intelligence
• Assisted Reproduction
• Bleeding and Transfusion
• Caring for the Critically Ill Patient
• Challenges in Clinical Electrocardiography
• Climate and Health
• Climate Change
• Clinical Challenge
• Clinical Decision Support
• Clinical Implications of Basic Neuroscience
• Clinical Pharmacy and Pharmacology
• Complementary and Alternative Medicine
• Consensus Statements
• Coronavirus (COVID-19)
• Critical Care Medicine
• Cultural Competency
• Dental Medicine
• Dermatology
• Diabetes and Endocrinology
• Diagnostic Test Interpretation
• Drug Development
• Electronic Health Records
• Emergency Medicine
• End of Life, Hospice, Palliative Care
• Environmental Health
• Equity, Diversity, and Inclusion
• Facial Plastic Surgery
• Gastroenterology and Hepatology
• Genetics and Genomics
• Genomics and Precision Health
• Global Health
• Guide to Statistics and Methods
• Hair Disorders
• Health Care Delivery Models
• Health Care Economics, Insurance, Payment
• Health Care Quality
• Health Care Reform
• Health Care Safety
• Health Care Workforce
• Health Disparities
• Health Inequities
• Health Policy
• Health Systems Science
• History of Medicine
• Hypertension
• Images in Neurology
• Implementation Science
• Infectious Diseases
• Innovations in Health Care Delivery
• JAMA Infographic
• Law and Medicine
• Leading Change
• Less is More
• LGBTQIA Medicine
• Lifestyle Behaviors
• Medical Coding
• Medical Devices and Equipment
• Medical Education
• Medical Education and Training
• Medical Journals and Publishing
• Mobile Health and Telemedicine
• Narrative Medicine
• Neuroscience and Psychiatry
• Notable Notes
• Nutrition, Obesity, Exercise
• Obstetrics and Gynecology
• Occupational Health
• Ophthalmology
• Orthopedics
• Otolaryngology
• Pain Medicine
• Palliative Care
• Pathology and Laboratory Medicine
• Patient Care
• Patient Information
• Performance Improvement
• Performance Measures
• Perioperative Care and Consultation
• Pharmacoeconomics
• Pharmacoepidemiology
• Pharmacogenetics
• Pharmacy and Clinical Pharmacology
• Physical Medicine and Rehabilitation
• Physical Therapy
• Physician Leadership
• Population Health
• Primary Care
• Professional Well-being
• Professionalism
• Psychiatry and Behavioral Health
• Public Health
• Pulmonary Medicine
• Regulatory Agencies
• Reproductive Health
• Research, Methods, Statistics
• Resuscitation
• Rheumatology
• Risk Management
• Scientific Discovery and the Future of Medicine
• Shared Decision Making and Communication
• Sleep Medicine
• Sports Medicine
• Stem Cell Transplantation
• Substance Use and Addiction Medicine
• Surgical Innovation
• Surgical Pearls
• Teachable Moment
• Technology and Finance
• The Art of JAMA
• The Arts and Medicine
• The Rational Clinical Examination
• Tobacco and e-Cigarettes
• Translational Medicine
• Trauma and Injury
• Treatment Adherence
• Ultrasonography
• Users' Guide to the Medical Literature
• Vaccination
• Venous Thromboembolism
• Veterans Health
• Women's Health
• Workflow and Process
• Wound Care, Infection, Healing
• Register for email alerts with links to free full-text articles
• Access PDFs of free articles
• Manage your interests
• Save searches and receive search alerts

Latest issue

Clarivate Journal Citation Reports 2024

Share this on social media:

Clarivate Plc  has released the 2024 update to the Journal Citation Reports (JCR). The reports provide a comprehensive resource of high-quality journals, ranked by field to enable academic institutions, researchers and publishers to gauge the significance of journals in the global research landscape. Changes to journal rankings include the addition of the Emerging Sources Citation Index.

Only journals that have met the rigorous quality standards for inclusion in the Web of Science Core Collection are featured within the Journal Citation Reports, to ensure that users can confidently rely on the information and descriptive data provided. The annual reports provide a rich array of publisher–independent data, metrics and analysis to enhance user understanding of journal performance, including the widely recognised Journal Impact Factor (JIF) and the Journal Citation Indicator. 

This year, for the first time, the JCR includes unified rankings across subject categories. There will no longer be separate JIF rankings for the nine subject categories that are indexed in multiple editions. Now those journals will receive a single ranking in their subject category, and the separate rankings will be eliminated. For example, a psychiatry journal listed in SCIE and SSCI will now be ranked in one unified Psychiatry ranking rather than two.  

Clarivate's Journal Citation Reports continue to evolve, writes  Nandita Quaderi

Key highlights for the 2024 release:

The JCR has been enhanced to provide an easier and more complete user experience. It includes the integration of journals from the Emerging Sources Citation Index (ESCI) in the new unified category rankings. 

Coverage of more than 21,800 journals – including ~5,800 journals which publish all their content via open access.

Scholarly journals from 113 countries, across 254 categories are recognized and receive a JIF. This includes 14,090 science journals, 7,321 social science journals and 3,304 arts & humanities journals.

544 journals receive a Journal Impact Factor for the first time.

Dr. Nandita Quaderi, Senior Vice President & Editor-in-Chief, Web of Science, Clarivate, said: “The creation of unified rankings is part of a series of policy changes we have made to support research integrity and help level the global playing field by making the JIF a marker of trust as well as scholarly impact.  Last year we extended the JIF to include ESCI journals. This year by ranking ESCI journals alongside all other journals in the same subject category we are sending another strong signal that all trustworthy journals – including newer journals and those with a niche or regional focus – should be valued and given consideration, regardless of how highly cited they are.”

Emmanuel Thiveaud, Senior Vice President, Research and Analytics, Academia & Government at Clarivate, added: “For nearly half a century, the global research community has relied on the annual Journal Citation Reports to confidently identify leading and trusted journals in their fields. This year’s enhancements are designed to address the evolving needs of our customers and the unified rankings across subject categories will enhance their ability to evaluate the performance of journals.”

To explore all available data, metrics and analysis visit the Journal Citation Reports.

Critically Thinking About “Citing Up”

Considering credibility, familiarity, and patience when citing research..

Posted June 12, 2024 | Reviewed by Davia Sills

• What Is a Career
• Find a career counselor near me
• Newer studies tend not to be referenced as frequently as more established scientific research.
• Credibility, familiarity, and implicit bias all play a role in which research gets cited more often.
• With patience and hard work, researchers can build their reputations as worthy of citation.

I came across an interesting social media post recently in preparation for a professional skills development workshop that I was presenting. The post discussed how academics tend to “cite up” in terms of referencing older, more famous scholars relative to more junior researchers. I thought about this proposition in light of my own citation strategies and knowledge of bibliometrics and concluded that this statement is likely true, but probably not for any explicit bias against junior researchers, as some might posit.

First and foremost, we must consider the purpose of citing research—to represent a source of evidence and indicate that someone didn’t just make up what they’re saying. It’s been established in previous work, and we pay that research kudos to further our argument in context. References are also useful for “ cutting a long story short”—one can cite another’s work that can more fully explain a concept without having to reiterate the whole thing. When I use a reference in my arguments, given that I’m trying to convince the reader of my point, I want to use the most credible source(s) that I can find.

Possible reasons for “citing up”

If Author A is at the apex of credible sources in the field, I’m going to cite them where appropriate. Indeed, if I was reviewing a relevant paper and didn’t see Author A cited, I might be concerned. Of course, one can include multiple citations, but perhaps the reason why more junior or early career researchers are not cited (relative to the Author As out there) is that other researchers may not be as familiar with the early career researchers”—Author Es’—research.

Maybe the citing researcher remembers the research but not the name of the author. Obviously, Author E’s work hasn’t seemed to “stick” yet, maybe because they’re yet to make a bigger impact in the field. Sure, that’s largely the citing researcher’s issue for not having better organized their reading and note-taking, but simply, it’s also an issue of accessibility. If a researcher can’t remember Author E’s name in this context, the credibility of Author A will more than suffice. “Citing up” is not a slight here; it’s just that Author E’s contribution might not be that impactful, accessible, or memorable to a more established researcher. Moreover, I must admit there might be a level of laziness here.

For example, the scenario above is context-dependent. If I can’t remember Author E, that’s fine; I have Author A to cite. However, if Author E is the only appropriate citation, the citing strategy will change. If I know a claim is fundamental to my rationale but I can’t remember where it came from, despite knowing I’ve seen solid evidence for it in the past, I will search for Author E’s paper until I find it (because I have to if there’s no Author A to rely on). This might take time and effort.

I can imagine that some researchers will be reading this and thinking, “Surely, others are reading the new literature and taking notes as they go along or maybe even writing the rationale as they engage the new literature.” Ideally, this should be the case; indeed, it’s a handy way of keeping up-to-date with the literature. However, this does not always happen.

I imagine more established researchers in a field are “familiar enough” with it to write a rationale without having to look up papers every few lines and, instead, are more likely to write what they know. Such is human nature. When they eventually get some free time, they might dedicate a few hours to reading recently published papers. I’m also aware that some researchers are better at this than others. Obviously, this is worrying in the realm of research—perhaps more worrying altogether than the issue of “citing-up.”

With that, what are the chances that a researcher has read every paper in their field? Slim-to-none. Given the exponential increase in the amount of information available to people in the past 25 years and, likewise, the increase in the amount of Ph.D. degrees awarded and research being conducted, being up-to-date with all work in a field just isn’t feasible.

So, maybe “lazy” is unfair in context. Maybe these researchers are indeed reading as much as they can, but because the amount that’s feasible is finite relative to the seemingly endless new research that’s coming out, they might be “pickier” in what they read; for example, prioritizing known and credible researchers in their field. So, there’s a good chance that when only Author A is cited regarding a particular finding, it’s quite possible that it’s because the citing researcher has never even heard of Author E’s paper, let alone read it.

Takeaways for early-career researchers

“New” papers—regardless of when and by whom they’re read, need “sticking power,” and by that, I mean that the research is well-conducted: It is well-written, and interesting food for thought is provided. I compile and read new papers every month—maybe one per session has any sticking power—and that’s not because I’m some kind of research snob; rather, it’s the case that much of it failed some of the criteria above. With that, if the paper had well-conducted research, was well-written, and provided either something novel or some food for thought, then regardless of familiarity, this paper (and its author) would be on my radar for the future. So, just as much as older researchers may be set in their bibliographies or “lazy” referencing, it is most definitely up to younger researchers to publish impactful work.

I completely understand how this is frustrating for early career researchers. I was there once, too. Even though it’s been well over 10 years since I received my Ph.D., I still find myself trying to make the aforementioned impact necessary to be considered one of those “A” researchers in the field. Of course, I get annoyed when I see missed opportunities for other researchers to cite my work. But I’m realistic enough to recognize that maybe they have not come across my work, I have not made a large enough impact for it to be noticed, or the research they did cite was sufficient to make their point. I don’t take it personally, and neither should young researchers. Their time will come, but they must be patient.

Consider the research by Morris, Wooding, and Grant (2011), where it was suggested that it takes approximately 17 years on average for health research implementation from “bench to bedside.” That’s a long time for “research to be realized.” I know citations are different and should be more visible quicker in the land of research, but the same logic applies. Patience—and continued hard work (i.e., to advance one’s research acumen)—are necessary for citation success.

Again, I don’t think that “citing up” is consciously done to slight early career academics; researchers are not conspiring against their junior colleagues—at least, not in my field. If anything, they want to see them and their field flourish. Instead, I think it’s more likely that this issue boils down to an implicit bias (which we all face on a day-to-day basis) toward what we know as familiar, accessible, and credible.

Morris, Z. S., Wooding, S., & Grant, J. (2011). The answer is 17 years, what is the question: understanding time lags in translational research. Journal of the royal society of medicine , 104 (12), 510-520.

Christopher Dwyer, Ph.D., is a lecturer at the Technological University of the Shannon in Athlone, Ireland.

• Find a Therapist
• Find a Treatment Center
• Find a Psychiatrist
• Find a Support Group
• Find Online Therapy
• United States
• Brooklyn, NY
• Chicago, IL
• Houston, TX
• Los Angeles, CA
• New York, NY
• Portland, OR
• San Diego, CA
• San Francisco, CA
• Seattle, WA
• Washington, DC
• Asperger's
• Bipolar Disorder
• Chronic Pain
• Eating Disorders
• Passive Aggression
• Personality
• Goal Setting
• Positive Psychology
• Stopping Smoking
• Low Sexual Desire
• Relationships
• Child Development
• Self Tests NEW
• Therapy Center
• Diagnosis Dictionary
• Types of Therapy

At any moment, someone’s aggravating behavior or our own bad luck can set us off on an emotional spiral that threatens to derail our entire day. Here’s how we can face our triggers with less reactivity so that we can get on with our lives.

• Emotional Intelligence
• Gaslighting
• Affective Forecasting
• Neuroscience

Help | Advanced Search

Computer Science > Computation and Language

Title: hallucination-free assessing the reliability of leading ai legal research tools.

Abstract: Legal practice has witnessed a sharp rise in products incorporating artificial intelligence (AI). Such tools are designed to assist with a wide range of core legal tasks, from search and summarization of caselaw to document drafting. But the large language models used in these tools are prone to "hallucinate," or make up false information, making their use risky in high-stakes domains. Recently, certain legal research providers have touted methods such as retrieval-augmented generation (RAG) as "eliminating" (Casetext, 2023) or "avoid[ing]" hallucinations (Thomson Reuters, 2023), or guaranteeing "hallucination-free" legal citations (LexisNexis, 2023). Because of the closed nature of these systems, systematically assessing these claims is challenging. In this article, we design and report on the first preregistered empirical evaluation of AI-driven legal research tools. We demonstrate that the providers' claims are overstated. While hallucinations are reduced relative to general-purpose chatbots (GPT-4), we find that the AI research tools made by LexisNexis (Lexis+ AI) and Thomson Reuters (Westlaw AI-Assisted Research and Ask Practical Law AI) each hallucinate between 17% and 33% of the time. We also document substantial differences between systems in responsiveness and accuracy. Our article makes four key contributions. It is the first to assess and report the performance of RAG-based proprietary legal AI tools. Second, it introduces a comprehensive, preregistered dataset for identifying and understanding vulnerabilities in these systems. Third, it proposes a clear typology for differentiating between hallucinations and accurate legal responses. Last, it provides evidence to inform the responsibilities of legal professionals in supervising and verifying AI outputs, which remains a central open question for the responsible integration of AI into law.

Submission history

Access paper:.

• HTML (experimental)
• Other Formats

References & Citations

• Google Scholar
• Semantic Scholar

BibTeX formatted citation

Bibliographic and Citation Tools

Code, data and media associated with this article, recommenders and search tools.

• Institution

arXivLabs: experimental projects with community collaborators

arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.

Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.

Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs .

• Our Program Divisions
• Our Three Academies
• Government Affairs
• Statement on Diversity and Inclusion
• Our Study Process
• Conflict of Interest Policies and Procedures
• Project Comments and Information
• Read Our Expert Reports and Published Proceedings
• Explore PNAS, the Flagship Scientific Journal of NAS
• Access Transportation Research Board Publications
• Coronavirus Disease 2019 (COVID-19)
• Diversity, Equity, and Inclusion
• Economic Recovery
• Fellowships and Grants
• Publications by Division
• Division of Behavioral and Social Sciences and Education
• Division on Earth and Life Studies
• Division on Engineering and Physical Sciences
• Gulf Research Program
• Health and Medicine Division
• Policy and Global Affairs Division
• Transportation Research Board
• National Academy of Sciences
• National Academy of Engineering
• National Academy of Medicine
• Publications by Topic
• Agriculture
• Behavioral and Social Sciences
• Biography and Autobiography
• Biology and Life Sciences
• Computers and Information Technology
• Conflict and Security Issues
• Earth Sciences
• Energy and Energy Conservation
• Engineering and Technology
• Environment and Environmental Studies
• Food and Nutrition
• Health and Medicine
• Industry and Labor
• Math, Chemistry, and Physics
• Policy for Science and Technology
• Space and Aeronautics
• Surveys and Statistics
• Transportation and Infrastructure
• Searchable Collections
• New Releases

VIEW LARGER COVER

Artificial Intelligence Opportunities for State and Local DOTs

A research roadmap.

Artificial intelligence (AI) has revolutionized various areas in departments of transportation (DOTs), such as traffic management and optimization. Through predictive analytics and real-time data processing, AI systems show promise in alleviating congestion, reducing travel times, and enhancing overall safety by alerting drivers to potential hazards. AI-driven simulations are also used for testing and improving transportation systems, saving time and resources that would otherwise be needed for physical tests.

NCHRP Web-Only Document 403: Artificial Intelligence Opportunities for State and Local DOTs: A Research Roadmap , from TRB's National Cooperative Highway Research Program, details possible steps for state and local DOTs to adopt AI in their pipelines.

• Transportation and Infrastructure — Data and Information Technology
• Transportation and Infrastructure — Policy

Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2024. Artificial Intelligence Opportunities for State and Local DOTs: A Research Roadmap . Washington, DC: The National Academies Press. https://doi.org/10.17226/27865. Import this citation to: Bibtex EndNote Reference Manager

Publication Info

What is skim?

The Chapter Skim search tool presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter. You may select key terms to highlight them within pages of each chapter.

What is a prepublication?

An uncorrected copy, or prepublication, is an uncorrected proof of the book. We publish prepublications to facilitate timely access to the committee's findings.

What happens when I pre-order?

The final version of this book has not been published yet. You can pre-order a copy of the book and we will send it to you when it becomes available. We will not charge you for the book until it ships. Pricing for a pre-ordered book is estimated and subject to change. All backorders will be released at the final established price. As a courtesy, if the price increases by more than $3.00 we will notify you. If the price decreases, we will simply charge the lower price. Applicable discounts will be extended.

Downloading and Using eBooks from NAP

What is an ebook.

An ebook is one of two file formats that are intended to be used with e-reader devices and apps such as Amazon Kindle or Apple iBooks.

Why is an eBook better than a PDF?

A PDF is a digital representation of the print book, so while it can be loaded into most e-reader programs, it doesn't allow for resizable text or advanced, interactive functionality. The eBook is optimized for e-reader devices and apps, which means that it offers a much better digital reading experience than a PDF, including resizable text and interactive features (when available).

Where do I get eBook files?

eBook files are now available for a large number of reports on the NAP.edu website. If an eBook is available, you'll see the option to purchase it on the book page.

View more FAQ's about Ebooks

Types of Publications

Have a language expert improve your writing

Run a free plagiarism check in 10 minutes, generate accurate citations for free.

• Knowledge Base
• Citing sources
• The Basics of In-Text Citation | APA & MLA Examples

The Basics of In-Text Citation | APA & MLA Examples

Published on March 14, 2022 by Jack Caulfield . Revised on February 28, 2024.

An in-text citation is a short acknowledgement you include whenever you quote or take information from a source in academic writing. It points the reader to the source so they can see where you got your information.

In-text citations most commonly take the form of short parenthetical statements indicating the author and publication year of the source, as well as the page number if relevant.

We also offer a free citation generator and in-depth guides to the main citation styles.

Generate accurate citations with Scribbr

Instantly correct all language mistakes in your text.

Upload your document to correct all your mistakes in minutes

Table of contents

What are in-text citations for, when do you need an in-text citation, types of in-text citation, frequently asked questions about in-text citations.

The point of an in-text citation is to show your reader where your information comes from. Including citations:

• Avoids plagiarism by acknowledging the original author’s contribution
• Allows readers to verify your claims and do follow-up research
• Shows you are engaging with the literature of your field

Academic writing is seen as an ongoing conversation among scholars, both within and between fields of study. Showing exactly how your own research draws on and interacts with existing sources is essential to keeping this conversation going.

Scribbr Citation Checker New

The AI-powered Citation Checker helps you avoid common mistakes such as:

• Missing commas and periods
• Incorrect usage of “et al.”
• Ampersands (&) in narrative citations
• Missing reference entries

An in-text citation should be included whenever you quote or paraphrase a source in your text.

Quoting means including the original author’s words directly in your text, usually introduced by a signal phrase . Quotes should always be cited (and indicated with quotation marks), and you should include a page number indicating where in the source the quote can be found.

Paraphrasing means putting information from a source into your own words. In-text citations are just as important here as with quotes, to avoid the impression you’re taking credit for someone else’s ideas. Include page numbers where possible, to show where the information can be found.

However, to avoid over-citation, bear in mind that some information is considered common knowledge and doesn’t need to be cited. For example, you don’t need a citation to prove that Paris is the capital city of France, and including one would be distracting.

Different types of in-text citation are used in different citation styles . They always direct the reader to a reference list giving more complete information on each source.

Author-date citations (used in APA , Harvard , and Chicago author-date ) include the author’s last name, the year of publication, and a page number when available. Author-page citations (used in MLA ) are the same except that the year is not included.

Both types are divided into parenthetical and narrative citations. In a parenthetical citation , the author’s name appears in parentheses along with the rest of the information. In a narrative citation , the author’s name appears as part of your sentence, not in parentheses.

Note: Footnote citations like those used in Chicago notes and bibliography are sometimes also referred to as in-text citations, but the citation itself appears in a note separate from the text.

An in-text citation is an acknowledgement you include in your text whenever you quote or paraphrase a source. It usually gives the author’s last name, the year of publication, and the page number of the relevant text. In-text citations allow the reader to look up the full source information in your reference list and see your sources for themselves.

At college level, you must properly cite your sources in all essays , research papers , and other academic texts (except exams and in-class exercises).

Add a citation whenever you quote , paraphrase , or summarize information or ideas from a source. You should also give full source details in a bibliography or reference list at the end of your text.

The exact format of your citations depends on which citation style you are instructed to use. The most common styles are APA , MLA , and Chicago .

Check if your university or course guidelines specify which citation style to use. If the choice is left up to you, consider which style is most commonly used in your field.

• APA Style is the most popular citation style, widely used in the social and behavioral sciences.
• MLA style is the second most popular, used mainly in the humanities.
• Chicago notes and bibliography style is also popular in the humanities, especially history.
• Chicago author-date style tends to be used in the sciences.

Other more specialized styles exist for certain fields, such as Bluebook and OSCOLA for law.

The most important thing is to choose one style and use it consistently throughout your text.

Cite this Scribbr article

If you want to cite this source, you can copy and paste the citation or click the “Cite this Scribbr article” button to automatically add the citation to our free Citation Generator.

Caulfield, J. (2024, February 28). The Basics of In-Text Citation | APA & MLA Examples. Scribbr. Retrieved June 18, 2024, from https://www.scribbr.com/citing-sources/in-text-citation-styles/

Is this article helpful?

Jack Caulfield

Other students also liked, how to quote | citing quotes in apa, mla & chicago, how to paraphrase | step-by-step guide & examples, how to avoid plagiarism | tips on citing sources, what is your plagiarism score.