APA (7th ed.) Citation

Rouček, J. S. (1946). Twentieth century political thought. Philosophical library.

Chicago Style (17th ed.) Citation

Rouček, Joseph S. Twentieth Century Political Thought. New York: Philosophical library, 1946.

MLA (9th ed.) Citation

Rouček, Joseph S. Twentieth Century Political Thought. Philosophical library, 1946.