In the process of writing a paper, you are going to use the knowledge and works of other writers and researchers. Whenever you do that you will need to document your source by indicating what you borrowed and from whom. There are various styles of citing documentation:
MLA Style – Modern Languages Association style - literature, arts, and humanities.
APA Style – American Psychological Association style - psychology, education, and other social sciences.
Chicago Style – The Chicago Manual of Style - used with all subjects in the "real world" by books, magazines, newspapers, and other non-scholarly publication.
How to assemble list of works cited in your paper
NoodleBib Express - Online tool for MLA, APA and Chicago Bibliographic Formats. It takes care of punctuation, alphabetization and formatting, producing a polished source list for import into Word.
Mendeley - Mendeley is a free reference manager and PDF reader designed for faculty and students for managing and sharing research papers, discovering research data and collaborating online.