In-text citation
The effects of cell phone use while driving have been well documented (Bestoff; Redelmeier and Tibshirani; Violanti).
Explain
To cite more than one source in the parentheses, give the citations in alphabetical order and separate them with a semicolon.
Multiple citations, however, are not widely used in the humanities, so you should not overuse the technique. (The sciences and social sciences do use multiple citations.) If you want to alert readers to several sources that discuss a particular topic, consider using an information note instead.
Works cited entries
Besthoff, Len. “Cell Phone Use Increases Risk of Accidents, but Users Willing to Take the Risk.” WRAL Online. Capitol Broadcasting, 9 Nov. 1999. Web. 12 Jan. 2001.
Redelmeier, Donald A., and Robert J. Tibshirani. “Association between Cellular-Telephone Calls and Motor Vehicle Collisions.” New England Journal of Medicine 336.7 (1997): 453-58. Print.
Violanti, John M. “Cellular Phones and Fatal Traffic Collisions.” Accident Analysis and Prevention 30 (1998): 519-24. Print.
Directory to MLA in-text citation models
Exercise: MLA documentation: in-text citations 1