APA vs MLA: Key Differences Explained
APA and MLA are the two most common citation styles in education — and mixing them up is one of the most common formatting errors in student papers. Here's a clear side-by-side comparison, plus a simple rule for knowing which one you need.
Generate citations in seconds
Free APA, MLA, Chicago & Harvard citation generator — no sign-up needed.
Open the Citation GeneratorWhich style should you use?
The short answer: your instructor decides — always check the assignment brief first. When it's your choice, follow your field:
| Use APA | Use MLA |
|---|---|
| Psychology, education, nursing | English literature, languages |
| Business, economics | Cultural & media studies |
| Sociology, political science | Philosophy (sometimes Chicago), arts |
| Sciences generally | Humanities generally |
In-text citations: author–date vs author–page
The deepest difference is what goes in parentheses. APA emphasizes when research was published; MLA emphasizes where in the text:
APA uses a comma and "p."; MLA uses neither. APA shortens 3+ authors to "et al." always; MLA does the same from the first citation too, but with different punctuation in the Works Cited entry.
References vs Works Cited
The same book, both ways:
Spot the differences: APA inverts to initials (Kahneman, D.), puts the year right after the author, and uses sentence case. MLA spells out the full first name, puts the year last, and capitalizes titles in Title Case.
Full comparison table
| APA 7 | MLA 9 | |
|---|---|---|
| List title | References | Works Cited |
| In-text | (Author, Year) | (Author Page) |
| Author names | Last, F. M. | Last, First Middle |
| Title capitalization | Sentence case | Title Case |
| Date position | After author | Near the end |
| Title page | Required (student version) | Usually a header block instead |
| URLs | Full with https:// | Without https:// |
| Typical fields | Sciences & social sciences | Humanities |
Switching between styles
Because both systems need the same underlying data (author, title, date, source), you can convert any citation between them mechanically — that's exactly what our generator does. Enter the source once and toggle between APA, MLA, Chicago, and Harvard from the style dropdown.
The mistakes people make when switching
Students who learned one style first predictably slip when writing in the other. Coming from MLA to APA, the classic errors are Title Case in reference titles, spelled-out first names, and missing years in in-text citations. Coming from APA to MLA: adding a comma before the page number — (Morrison, 27) is wrong in MLA — writing "p." before pages, and using sentence case in Works Cited titles. When you switch styles mid-degree, re-generate your references rather than hand-editing them; punctuation differences are too easy to miss.