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. 


MLA (Modern Language Association) is frequently used in humanities 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.

CMoS (The Chicago Manual of Style) is also often used in humanities courses, as well as 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.

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

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

APA (American Psychological Association) style is often used in 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.