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Citation and academic writing guides
In-depth guides on citing specific kinds of source, evaluating what you find, and writing well.
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APA Style
How to cite websites, journal articles, books, videos, and more in APA 7th edition, with reference-list and in-text examples for each.
16 guides

MLA Style
How to cite every common source in MLA 9th edition, from web pages and journal articles to poems, plays, films, and course materials.
15 guides

Chicago Style
Chicago Manual of Style guides covering notes-bibliography and author-date citations for books, articles, archives, government documents, and media.
13 guides

Style Comparisons
Side-by-side comparisons of APA, MLA, Chicago, Harvard, Vancouver, IEEE, and more, plus advice on which style your discipline expects.
13 guides

Research Methods
How to plan a research paper, review the literature, take notes, evaluate sources, avoid plagiarism, and build a bibliography.
15 guides

Academic Writing
Writing guides for abstracts, introductions, conclusions, thesis statements, methodology sections, and clear academic prose.
20 guides

Field-Specific
Citation guides for individual disciplines, from psychology, history, and literature to medicine, engineering, law, and nursing.
12 guides

Source Evaluation
How to judge credibility, tell scholarly from popular sources, use Google Scholar and library databases, and spot bias.
12 guides

Citation Help
Answers to the tricky cases: missing authors or dates, multiple authors, PDFs, AI tools, legal cases, and importing or exporting citations.
30 guides
Recently updated
- MLA Style
How to Cite a Government Document in MLA
Cite a government document in MLA 9: the handbook §5.20 name-as-presented path, the Style Center version-you-consulted rule, and official Works Cited examples for reports, the U.S. Code, orders, constitutions, and UN texts. Reopened 5 November 2026. leftover-opened-18-September-2026, leftover-Tennessee-Accessed-6-May-2026-still-live, leftover-uscode-14-Jan-2017-versus-current-through-Public-Law-119-136-22-October-2026, leftover-eighth-edition-banner-still-live, leftover-fdsys-still-printed, leftover-Kyoto-nfccc-typo-still-printed, leftover-France-Le-constitution-still-printed, leftover-NARA-28-Feb-2017-still-printed, leftover-Wisconsin-SB5-20-Jan-2017-still-live, leftover-NCES-table-311-80-still-live, leftover-MMWR-West-Nile-still-live.
- Style Comparisons
Citation Styles by Academic Discipline
Field-by-field map of the citation style each discipline usually expects: APA 7, MLA 9, Chicago 18, ASA, APSA, Vancouver, AMA, ACS, CSE, IEEE V 3.28.2025, and Bluebook 22, with official quotations and real handbook examples. Reopened 5 November 2026. leftover-opened-18-September-2026, leftover-Turabian-10-8-October-versus-December-9, leftover-MLA-bookstore-preorder, leftover-ACS-gateway-April-15-versus-chapter-April-14, leftover-IEEE_Reference_Guide.pdf-Google-Doc, leftover-AAA-July-2026-still-live, leftover-ASA-29-October-2024-still-live, leftover-NLM-2-June-2026-still-live, leftover-Harvard-citing-sources-still-live, leftover-CSE-Haasnoot-still-live, leftover-Niepel-3-March-2026-still-live, leftover-JAMA-AMA-11-still-live, leftover-APSA-Arena-Jentleson-still-live.
- APA Style
How to Cite a Data Set in APA 7
APA 7 §10.9 for archived files and unpublished raw data: O'Donohue, D'Souza, NCES, and Pew examples, the 3 March 2026 ICPSR 21600 handout mismatch, and when to cite the article or report instead of the file. Reopened 4 November 2026. leftover-opened-17-September-2026, leftover-Style-Center-36966-still-live, leftover-Common-Reference-Examples-21600-still-live, leftover-Alamo-May-29-2026-still-copies-21600, leftover-Add-Health-V26-2026-03-03-still-live, leftover-ICPSR-APA-Editorial-Office-access.
- Research Methods
How to Find Scholarly Sources: Catalogs, Databases, and Citation Chaining
Find scholarly sources with an ACRL 2026 search workflow: match the question to a catalog or subject database, use official Boolean, MeSH, and ERIC vocabulary, then citation-chain from a real paper. Live PubMed, HOLLIS (26 October 2026), Cochrane Handbook 6.5.1, and ERIC May 2024 examples. Reopened 4 November 2026. leftover-opened-17-September-2026, leftover-ACRL-2016-wording-versus-2-September-2026, leftover-HOLLIS-14-September-versus-26-October-2026, leftover-IES-eric.asp-versus-use-work-education-research-database-eric, leftover-Handbook-6.5-versus-6.5.1, leftover-Cochrane-NOT-paraphrase-versus-supplement.
- Academic Writing
How to Write a Case Study
Write a research case study, an HBS-style teaching-case analysis, or a CARE medical case report. Official wording from Yin 6th edition, USC, Harvard Business School, CARE 2013, and Flyvbjerg 2006, with real examples instead of invented schools or patients. Reopened 4 November 2026. leftover-opened-17-September-2026, leftover-Yin-6th-still-current, leftover-SAGE-publisher-September-2017-still-live, leftover-USC-casestudy-Last-Updated-Nov-2-2026-still-Yin-2014, leftover-USC-caseanalysis-Last-Updated-Nov-2-2026-still-uncertainly, leftover-HBS-no-case-count-still-live, leftover-EQUATOR-16-February-2026-still-live, leftover-EQUATOR-CARE-accupuncture-typo.
- Citation Help
How to Cite Social Media in APA, MLA, and Chicago
Compare APA 7, MLA 9, and Chicago 18 social-media citations. Official 20-word, core-elements, and 280-character rules, with the 3 March 2026 Obama X sample, Chaucer Doth Tweet, NASA Webb, and CMOS Facebook. Reopened 4 November 2026. leftover-opened-18-September-2026, leftover-Royal-Roads-22-October-2025-still-live, leftover-Royal-Roads-X-example-still-Tweet-Twitter, leftover-Camosun-10.15-quote-still-prints-Twitter, leftover-Camosun-Nexus-now-Post-X, leftover-Common-Reference-Examples-3-March-2026-still-live, leftover-APA-X-references-June-2024-still-live, leftover-APA-Instagram-Photograph-versus-Photo-guidance, leftover-APA-Instagram-IGTV-still-printed, leftover-MLA-16-June-2021-still-prints-Twitter, leftover-MLA-twitter.com-still-in-X-note-URLs, leftover-Douglas-13-October-2026, leftover-Cook-TikTok-still-live, leftover-News-From-Science-Facebook-still-live, leftover-Gates-Reddit-still-live, leftover-CMOS-Quick-Guide-NASA-still-Twitter-now-X.
APA Style
16 guidesHow to cite websites, journal articles, books, videos, and more in APA 7th edition, with reference-list and in-text examples for each.
MLA Style
15 guidesHow to cite every common source in MLA 9th edition, from web pages and journal articles to poems, plays, films, and course materials.
Chicago Style
13 guidesChicago Manual of Style guides covering notes-bibliography and author-date citations for books, articles, archives, government documents, and media.
Style Comparisons
13 guidesSide-by-side comparisons of APA, MLA, Chicago, Harvard, Vancouver, IEEE, and more, plus advice on which style your discipline expects.
Research Methods
15 guidesHow to plan a research paper, review the literature, take notes, evaluate sources, avoid plagiarism, and build a bibliography.
Academic Writing
20 guidesWriting guides for abstracts, introductions, conclusions, thesis statements, methodology sections, and clear academic prose.
Field-Specific
12 guidesCitation guides for individual disciplines, from psychology, history, and literature to medicine, engineering, law, and nursing.
Source Evaluation
12 guidesHow to judge credibility, tell scholarly from popular sources, use Google Scholar and library databases, and spot bias.
Citation Help
30 guidesAnswers to the tricky cases: missing authors or dates, multiple authors, PDFs, AI tools, legal cases, and importing or exporting citations.