An important part of doing a research paper is citing the sources that you used. The citation style that you use depends upon the discipline that you are writing in, and the preference of the instructor or department that you are writing the paper for. This page provides a series of links to sites that show how to use the various citation styles.
These sites provide information on how to use many different citation styles. Some of these cites compare the requirements of different styles, while others provide links to the different citation styles.
These sites provide a guide to using the ACS style
These sites provide a guide to using the AMA style
These sites provide a guide to using the APA style
These sites provide a guide to using the Chicago Style
These sites provide a guide to using the MLA style
These sites provide a guide to using the Turabian style
These sites contain tips that will help you improve your writing.