Cita APA (7a ed.)

Beard, C. A., & Beard, W. (1963). American government and politics (10th ed.). Macmillan Company.

Cita Chicago Style (17a ed.)

Beard, Charles A., y William Beard. American Government and Politics. 10th ed. New York: Macmillan Company, 1963.

Cita MLA (9a ed.)

Beard, Charles A., y William Beard. American Government and Politics. 10th ed. Macmillan Company, 1963.