Style-Guide Overview: What Each Is For
Here's the thing — style guides aren't rival claims about "correct English." They're house manuals, each built for a particular kind of writing, and knowing which job you're doing is half the work before you open any of them. This page is a finder, not a lesson: it says what each guide is for and points you home to the pillars that teach the underlying grammar.
| Guide | Home turf | Typical users | What it's for | Links home |
|---|---|---|---|---|
| APA — Publication Manual of the American Psychological Association | Psychology and the social/behavioural sciences; education, nursing, and much STEM-adjacent research | Students, researchers, and journal authors in those fields | Author–date in-text citations and a reference list; a predictable structure for reporting method and data | Register and clarity → P9 · Style, Formality & Register; citation punctuation → P6 · Punctuation; numbers and spelling → P8 · Spelling, Morphology & Word Choice |
| MLA — MLA Handbook (Modern Language Association) | The humanities — literature, languages, film, and cultural studies | Students and scholars writing about texts rather than data | Author–page in-text citations and a Works Cited list; close attention to the source text | Quotation and titles → P6 · Punctuation, P7 · Capitalisation; essay register → P9 · Style, Formality & Register |
| Chicago — The Chicago Manual of Style (CMOS) | General and scholarly publishing; history and long-form non-fiction | Editors, publishers, and authors of books, journals, and articles | Two citation systems under one roof — notes and bibliography (humanities/history) and author–date (sciences); broad manuscript and house-style guidance | Punctuation → P6 · Punctuation; capitalisation → P7 · Capitalisation; spelling and hyphenation → P8 · Spelling, Morphology & Word Choice |
| Oxford / New Hart's Rules — New Hart's Rules (Oxford University Press house style) | UK publishing — academic, reference, and general non-fiction | UK editors, publishers, and writers working to Oxford/UK house conventions | House-style consistency for British books: spelling, punctuation, hyphenation, capitalisation, and typesetting | Spelling systems (-our/-re, -ise/-ize) → P8 · Spelling, Morphology & Word Choice; punctuation → P6 · Punctuation; capitalisation → P7 · Capitalisation |
In one line each
- APA — social-science and science papers: author–date, structured reporting.
- MLA — literary and textual work: author–page, text first.
- Chicago — books and long-form publishing across fields, with two citation systems in one manual.
- Oxford / New Hart's Rules — a UK publishing house style rather than a North-American student or journal standard.
A quick note on scope
None of these settles how you write an email, a text, or a novel — that's register and audience, which live over in P9 · Style, Formality & Register. A style guide fixes consistency for a given field, country, or publisher. Usually your tutor, editor, or journal names the one that applies; when the choice is yours, you match the field and the market you're writing for. And "Oxford comma" doesn't mean "Oxford style everywhere" — a publisher can borrow one preference and follow its own guide for the rest, so always check which full guide is meant.
Where this library goes next
The detail and the disagreements live in the rest of Pillar 12:
- The APA / MLA / Chicago matrix — a side-by-side of how the three handle citations, headings, numbers, and quotation (piece 13).
- Oxford / Hart's snapshot — a focused look at UK/Oxford-style choices (piece 14).
- Contested points — where the guides genuinely differ, each flagged against the grammar in Pillars 1–11 (piece 15).