Generally, students writing papers for English courses will document their sources in MLA style. MLA stands for "Modern Language Association."
If your professor asks you to use a different citation style, ask a librarian for help finding the correct style guide.
MLA Handbook for Writers of Research Papers
Paul Robeson Library Location
REF DESK
LB 2369.G53 2009
Or find more information about MLA at Purdue OWL:
The Online Writing Lab (OWL) at Purdue University