Visit the APA site for information on formatting your papers, creating in-text citations, tables and charts, developing your reference list/bibliography, and much more.
NOTE: The Chicago Style has two different systems: endnotes/footnotes and author-date. Be sure to ask your professor which style you should use.
Western Oregon University created this in-depth guide to Chicago Style.
The MLA has a lot of information and tutorials on their website:
American Political Science Association (APSA) has an excellent guide on their citation style.
Click on the links below to download PDFs of the following ASA style guides: