For sociology projects and essays, you're typically expected to use one of two styles, ASA or APA. Check with your professor to learn which s/he wants used on a given assignment, then consult one of the following resources.
Learn about other styles (MLA, Chicago, Turabian, etc.) at the Library's webpage on Style Manuals & Writing Guides.
You can also use RefWorks to organize references you collect while conducting research, cite the references in your essay, and compile a bibliography according to the citation style of your choice. Open RefWorks to get started, or consult our RefWorks Guide for more information (including the Group Code for CSULA).