OWL @ Purdue - The Online Writing Lab from Purdue University is a great resource to help with any citing questions you may have and it can be accessed from anywhere with an internet connection.
What is a Citation?
From Oregon State University:
A citation is the information needed to locate the article (or book) you are interested in reading.
For articles, a complete citation generally includes:
For books, a complete citation generally includes:
Citations are also used to help readers of your papers go to the information you used.
Le Carre, John. The Constant Gardener. New York: Scribner's, 2001. Print.
Hutcheon, Linda and Michael Hutcheon. Bodily Charm: Living Opera. Lincoln: U of Nebraska P, 2000. Print.
Booth, Wayne C., Gregory G. Colcomb, and Joseph M. Williams. The Craft of Research. 2nd ed. Chicago: U of Chicago P, 2003. Print.
Plag, Ingo, et al. Introduction to English Linguistics. Berlin: Mouton, 2007. Print.
New York Public Library American History Desk Reference. New York: Macmillan, 1997. Print.
Piper, Andrew. "Rethinking the Print Object: Goethe and the Book of Everything." PMLA 121.1 (2006): 124-38. Print.
Shehan, Constance L., and Amanda B. Moras. "Deconstructing Laundry: Gendered Technologies and the Reluctant Redesign of Household Labor." Michigan Family Review 11 (2006): n.pag. Web. 8 Nov. 2007.
Tolson, Nancy. "Making Books Available: The Role of Early Libraries, Librarians, and Booksellers in the Promotion of African American Children's Literature." African American Review 32.1 (1998): 9-16. JSTOR. Web. 5 June 2008.
"United Farm Workers Union." Encyclopedia of Race and Racism. McMillan Reference USA, 2009. Gale Virtual Reference Library. Web. 15 May 2009.
"How to Make Vegetarian Chili." eHow.com. eHow.com, n.d. Web. 24 Feb. 2009.
Note: use this general format for citing a web site: Author. "Title". Title of web site. Publisher (if none use n.p.), date of publication (if none use n.d.). Web. Date of access. If URL needs to be included, format is as follows:
< http://www.blakearchive.org/blake/ >.
URL's are not required unless your instructor requires them, or the reader cannot locate the source without it.
For more information see the WSU MLA Citation Guide