The following sites are offered as suggestions for help with citing sources for your college research papers.

MLA Formatting and Style Guide
Very helpful guide from the Purdue Online Writing Center covers MLA citation style and also formatting guidelines for papers.

APA Formatting and Style Guide
Examples for the general format of APA research papers, in-text citations, endnotes/footnotes, and the reference page from the Purdue Online Writing Center.

APA Style Tutorials and Webinars
Tutorials on the basics of the American Psychological Association style, from APA.

Turabian Citation Quick Guide
Examples taken from Turabian's Manual for Writers of Research Papers, Theses, and Dissertations, 8th edition.

CSE Citation Style
Introduction to the Council of Science Editors (CSE) documentation style, from the University of Wisconsin, Madison.