Three commonly used citation styles are MLA (Modern Language Association), APA (American Psychological Association), and University of Chicago styles. The resources below can help you format your citations. Remember, no matter what style you used to keep track of your resources as you do your research!
MLA Handbook by The Purdue OWL (Online Writing Lab) provides this example of a research paper in MLA format.
Publication Manual of the American Psychological Association by 
APA Style Simplified (eBook) by The Purdue OWL (Online Writing Lab) provides this example of a research paper in APA format.
The Chicago Manual of Style by 