Publication Manual of the American Psychological Association by Some online guides for APA style:
Current APA Guide--From Tomlinson Library, updated for the 7th edition
Purdue Online Writing Lab Guide—Detailed overview of all aspects of writing and citing in APA style
MLA Handbook by Some online guides for MLA style:
Tomlinson Library illustrated guide to MLA style
Purdue Online Writing Lab Guide—Detailed overview of all aspects of writing and citing in MLA style
Concordia University MLA Guide—Straightforward examples of how to cite different types of sources
Online Writing Lab (OWL) at Excelsior College - Provides a helpful introduction to common elements of MLA style with examples for in-text and Works Cited citations, an MLA checklist, and demo. Scroll down and find the MLA options on the left-hand menu. The OWL at Excelsior College also has excellent guidance for the writing and research process.
The Chicago Manual of Style
Some online guides for Chicago style:
Purdue Online Writing Lab Guide—Detailed overview of all aspects of writing and citing in the Chicago Manual of style
University of Las Vegas Nevada Guide to Chicago Style—Straightforward examples of how to cite different types of sources
The 2010 edition of the Chicago Manual of Style is available in the library: