APA (7th ed.) Citation

Ketchum, R. M., & Kirk, G. (1955). What is communism? E.P. Dutton.

Chicago Style (17th ed.) Citation

Ketchum, Richard M., and Grayson Kirk. What Is Communism? New York: E.P. Dutton, 1955.

MLA (9th ed.) Citation

Ketchum, Richard M., and Grayson Kirk. What Is Communism? E.P. Dutton, 1955.

Warning: These citations may not always be 100% accurate.