Citation Guides: Citation Guides

APA is used most frequently in the sciences and social sciences.  Selected online style guides for APA:

• Williams College APA Guide
• Purdue OWL: APA Formatting and Style Guide

MLA is used most frequently in humanities disciplines such as English, foreign language, and literature.  Selected online style guides for MLA:

• Williams College MLA Guide
• Purdue OWL: MLA Formatting and Style Guide

Chicago Style includes two systems of documentation.  The notes and bibliography system is used by many disciplines in the arts and humanities.  The author-date system is used by disciplines in the physical, natural, and social sciences.  Selected online style guides for Chicago:

• Chicago-Style Citation Quick Guide
• Purdue OWL: Chicago Manual of Style 17th Edition

Kate Turabian's A Manual for Writers of Research Papers, Theses, and Dissertations, the 9th edition is currently unavailable.  The 8th edition is available in the Research Help Area on the main floor and in the stacks.  Except for a few small differences, Turabian is identical to Chicago.  Selected online style guides for Turabian:

• Turabian Quick Guide