Debby Ellis Writing Center

Student Resources for Writing

Style & Citation Guides and Models

Be sure to check with your professor to see which style is appropriate for your class. 

 

AAS (The American Astronomical Society) is the standard citation style used for astronomy writing (in some physics courses).

Guidelines for AAS style are available on the AAS website.

ACS (The American Chemical Society) is the standard citation style used in chemistry courses.

Williams College has a helpful quickguide to ACS style available online.

AIP (The American Institute of Physics) is the standard citation style used in physics and some engineering courses.

A pdf form of the 4th edition of the AIP style guide is available on Kenneth Hanson’s website. 

APA (American Psychological Association) style is often used in psychology and other social science courses.

Purdue OWL’s APA Style Guide Online addresses questions about citations, reference lists, stylistics, and formatting tables and figures.

The Bedford-St. Martin’s Guide has a sample, annotated  APA Research Paper online.

ASA (American Sociological Association) is commonly used in sociology courses.

Purdue OWL also has an ASA Formatting and Style Guide.

CMS (The Chicago Manual of Style, or “Chicago”) is often used in humanities courses and in the social sciences.

Purdue OWL has a Guide to Chicago Style that focuses on the Notes & Bibliography (NB) system commonly used in the Humanities.

They have a Sample CMS NB paper available, as well.

Williams College Library has a Guide to Chicago Style that focuses on the Author-Date system generally used in the Social Sciences and Sciences. 

Purdue OWL also provides a Sample CMS Author-Date paper.

CSE (Council of Science Editors) style is sometimes used in biology courses.

The Bedford-St. Martin’s Guide has helpful Overview of CSE Documentation Systems.

They also provide a Sample CSE paper.

MLA (Modern Language Association) is frequently used in English and modern language courses. 

Purdue OWL’s MLA Formatting and Style Guide has useful information and models for formatting your paper, including quotations and citations, and developing your works cited page.
 
The Bedford-St. Martin’s Guide has a sample MLA Research Paper online that is annotated to show effective writing and use of MLA conventions.
 

Turabian Style is a variation of Chicago frequently used in business and political science courses. 

Turabian Quick Guide, with sample citations for different types of sources, is available on the University of Chicago Press website.