The American Political Science Association (APSA) citation style is used in Political Science and International Studies, and is based on the Chicago Manual of Style. Here are some examples on how to cite various commonly used sources in APSA style.
Book with one author:
Kessel, John H. 1968. The Goldwater Coalition: Republican Strategies in 1964. Indianapolis: Bobbs-Merrill.
Book with two or more authors:
Sorauf, Frank J., and Paul Allen Beck. 1988. Party Politics in America. 6th ed. Glenview, IL: Scott, Foresman.
Ball, Terence, James Farr, and Russell L. Hanson, eds. 1988. Political Innovation and Conceptual Change. New York: Cambridge University Press.
Electronic Journal article:
Browning, Tonya. 1997. “Embedded Visuals: Student Design in Web Spaces.” Kairos: A Journal for Teachers of Writing in Webbed Environment 3 (1). http://english.ttu.edu/-kairos/2.1/features/browning/index.html (Accessed October 21, 1997).
Print Journal article:
Aldrich, John H. 1980. “A Dynamic Model of Presidential Nomination Campaigns.” American Political Science Review 74 (September): 651–69.
King, Gary, Michael Tomz, and Jason Wittenberg. 1998. “Making the Most of Statistical Analyses: Improving Interpretation and Presentation.” September 7. http://gking.harvard.edu/preprints.shtml (October 22, 1998).