Most college, and even high school, teachers will require that you use a specific format when citing the sources of the information you used in your research papers. You should keep a copy of the basic information for each source, such as the authors name. You can find more information here: http://library.duke.edu/research/citing/...

How you cite a source depends on the style guide you are using. APA and MLA are two of the most commonly used style guides. You can use an online bibliography generator to help you out. You can find more information here: http://www.easybib.com/...