Citation Guides by Style
Official how-to-cite resources (MLA 9th, APA 7th, Chicago 18th, Turabian 9th, ASA 6th, Generative AI), plus recommended books & reference tools.
Quick Links to Guides
Citing Generative AI
Using AI tools (e.g., ChatGPT) responsibly and citing them correctly.
- AI Citation Guide – All Styles (PDF)
- MLA Style Center — How do I cite generative AI?
- APA Style — How to cite ChatGPT
- Chicago Manual of Style (18th) — What’s New (see §14.112 on AI)
- Chicago Q&A — Citing AI tools (ChatGPT, etc.)
MLA (Modern Language Association)
- MLA Citation Guide, 9th ed. (PDF)
- MLA Handbook (print)
- Purdue OWL — MLA Formatting & Style Guide
APA (American Psychological Association)
- APA Citation Guide, 7th ed. (PDF)
- The Concise APA Handbook (Trinity access)
- Publication Manual of the APA (print)
- Purdue OWL — APA Formatting & Style Guide
Chicago Manual of Style (Notes–Bibliography)
- Chicago – Notes & Bibliography Citation Guide, 18th ed. (PDF)
- Chicago Manual of Style (Trinity access)
- Chicago Manual of Style (Library Reserves)
- Chicago-Style Citation Quick Guide
Chicago Manual of Style (Author–Date)
- Chicago – Author-Date Citation Guide, 18th ed. (PDF)
- Chicago Manual of Style (Trinity access)
- Chicago Manual of Style (Library Reserves)
- Chicago-Style Citation Quick Guide
Turabian (Notes–Bibliography Style), 9th ed.
Turabian (Author–Date Style), 9th ed.
ASA (American Sociological Association), 6th ed.
ACS (American Chemical Society)
- ACS Style Guide (Trinity access)
Spacing & Indentation of Entries
- MLA: double-space the Works Cited page
- APA: double-space the References page
- Chicago: double-space the Bibliography page
- ASA: double-space the References page
- Turabian: single-space within each entry; double-space between entries