There a variety of citation styles available for use, including MLA, APA, Chicago, and others. Below are resources to help you learn how to correctly cite your sources in different styles.
The Online Writing Lab (OWL) at Purdue University houses writing resources and instructional material. The site covers APA, MLA, and Chicago citation styles.
The University of Wisconsin-Madison's Writer's Handbook includes instructional materials developed for their writing center. In the "Cite References in Your Paper" section, you will find information on APA, Chicago, MLA, and other citation styles.