APA (7th ed.) Citation

Ketchum, R. M., & Kirk, G. (1959). What is communism? E.P. Dutton.

Chicago Style (17th ed.) Citation

Ketchum, Richard M., and Grayson Kirk. What Is Communism? New York, N.Y: E.P. Dutton, 1959.

MLA (8th ed.) Citation

Ketchum, Richard M., and Grayson Kirk. What Is Communism? E.P. Dutton, 1959.