APA (7th ed.) Citation

Beard, C. A. (1922). The economic basis of politics. A.A. Knopf.

Chicago Style (17th ed.) Citation

Beard, Charles A. The Economic Basis of Politics. New York: A.A. Knopf, 1922.

MLA (9th ed.) Citation

Beard, Charles A. The Economic Basis of Politics. A.A. Knopf, 1922.