Here is the Chicago Manual of Style's Notes and Bibliography: Sample Citations page. It's extremely useful for examples of exact citation styles.
Check out this helpful guide from Yale University's Poorvu Center for Teaching and Learning to better understand what plagiarism is, and how to avoid it.
The Online Writing Lab (OWL) from Purdue University offers excellent guides to the MLA, Chicago and APA styles as well as general advice on writing.
SPA provides students with access to NoodleTools, a citation management program that helps you compile a properly cited bibliography. Here are instructions for registering your account the first time. If you need additional help, please contact Ms. Cat