MLA vs APA vs Chicago: Which Citation Style Should You Use?

Confused about which citation style your paper needs? Here's a clear breakdown of MLA, APA, and Chicago — when to use each, how they differ, and quick examples.

If you've ever stared at a works cited page wondering whether to put the date before or after the publisher, you know the pain of citation styles.

The three most common academic citation styles — MLA, APA, and Chicago — each have their own logic, their own rules, and their own frustrating edge cases. Here's exactly what you need to know about all three.

The Short Answer: Which Style for Which Subject?

| Field | Style | |-------|-------| | Literature, Language, Film, Media | MLA | | Psychology, Education, Social Sciences, Nursing | APA | | History, Philosophy, Art, Music | Chicago | | Business | Usually APA | | Sciences | Often APA or discipline-specific | | Law | Bluebook (different guide) |

When in doubt, check your syllabus or ask your professor. Never assume.

MLA (Modern Language Association)

Used in: Humanities — literature, film, language, cultural studies

Core logic: MLA cares most about who wrote it and where to find it in the text. Publication dates are less prominent because in the humanities, a 1950 book can be just as relevant as one from last year.

MLA In-Text Citation

> (Smith 45) > Author's last name + page number. No comma. No "p."

MLA Works Cited Entry (Book)

> Smith, John. The Great Argument. Penguin Books, 2020.

MLA Works Cited Entry (Journal Article)

> Smith, John. "The Role of Metaphor." Journal of Literary Studies, vol. 12, no. 3, 2021, pp. 45–67.

Key MLA Rules

- Title page: not required (author info goes in top-left corner of first page) - "Works Cited" not "Bibliography" or "References" - Hanging indent on all entries - Italicise book and journal titles - No italics on article titles — use quotation marks

APA (American Psychological Association)

Used in: Social sciences, psychology, education, nursing, business

Core logic: APA prioritises when it was published — because in the sciences and social sciences, recency matters. A 2015 study on depression treatments is far less relevant than a 2024 one.

APA In-Text Citation

> (Smith, 2022) > (Smith, 2022, p. 45) — for direct quotes

APA Reference Entry (Journal Article)

> Smith, J. A. (2022). Title of article in sentence case. Journal Name, 12(3), 45–67. https://doi.org/xxxxx

APA Reference Entry (Book)

> Smith, J. A. (2020). Book title in sentence case. Publisher.

Key APA Rules

- Current version: 7th edition (published 2020) - Title page required — includes paper title, author, institution, course, instructor, date - "References" not "Works Cited" - Sentence case for article and book titles (only capitalise first word and proper nouns) - Title case for journal names - Include DOI wherever available - et al. for 3+ authors from first mention

Chicago Style

Used in: History, philosophy, art history, music, some social sciences

Core logic: Chicago has two systems — Notes-Bibliography (used in humanities) and Author-Date (used in social sciences). Most history papers use Notes-Bibliography.

Chicago Notes-Bibliography (Footnote)

> ¹ John Smith, The Great Argument (London: Penguin Books, 2020), 45.

Chicago Notes-Bibliography (Bibliography Entry)

> Smith, John. The Great Argument. London: Penguin Books, 2020.

Key Chicago Rules

- Footnotes or endnotes for in-text citations (not parenthetical) - First reference: full citation in footnote - Subsequent references: shortened form (Smith, Great Argument, 45) - Bibliography at the end (full entries, alphabetised) - Publisher and place of publication included (unlike APA)

Side-by-Side Comparison

| Feature | MLA | APA | Chicago | |---------|-----|-----|---------| | In-text style | Author + page | Author + year | Footnote | | Date position | End of entry | After author | End of entry | | Title page | No | Yes | Yes | | End list name | Works Cited | References | Bibliography | | Sentence case titles | No | Yes | No |

The Most Common Mistakes

MLA: Putting the date in the wrong place, using "Bibliography" instead of "Works Cited"

APA: Using title case for article titles (should be sentence case), forgetting DOIs, listing all authors instead of et al.

Chicago: Forgetting to shorten repeated footnotes, confusing Notes-Bibliography with Author-Date system

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