APA (7th ed.) Citation

Odegard, P. H., & Helms, E. A. (1947). American politics, a study in political dynamics (2d ed.). Harper.

Chicago Style (17th ed.) Citation

Odegard, Peter H., and E. Allen Helms. American Politics, a Study in Political Dynamics. 2d ed. New York: Harper, 1947.

MLA (8th ed.) Citation

Odegard, Peter H., and E. Allen Helms. American Politics, a Study in Political Dynamics. 2d ed. Harper, 1947.