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This site from Trinity College presents visual information about how to cite various sources in a visual way, and they offer guidance on citing tricky sources. Check out the source help for APA, APSA, Chicago, and MLA styles.
OWL has lots of general and subject-specific writing tips and techniques, along with research advice and detailed citation and formatting standards for the APA, MLA, and Chicago styles.
The Craft of Research by 
A Manual for Writers of Research Papers, Theses, and Dissertations by 
