APA (7th ed.) Citation

Odegard, P. H., & Helms, E. A. (1938). American politics: A study in political dynamics. Harper and Brothers.

Chicago Style (17th ed.) Citation

Odegard, Peter H., and E. Allen Helms. American Politics: A Study in Political Dynamics. New York, London: Harper and Brothers, 1938.

MLA (9th ed.) Citation

Odegard, Peter H., and E. Allen Helms. American Politics: A Study in Political Dynamics. Harper and Brothers, 1938.