MLA

Polsby, Nelson W, and Aaron B Wildavsky. Presidential Elections : Contemporary Strategies of American Electoral Politics. 7th ed. New York: Free Press , 1988.

APA

Polsby, N. W, & Wildavsky, A. B. (1988). Presidential elections : contemporary strategies of American electoral politics. 7th ed. New York: Free Press .

Chicago

Polsby, Nelson W., and Aaron B Wildavsky. Presidential Elections: Contemporary Strategies of American Electoral Politics. 7th ed. New York: Free Press, 1988.