APA (7th ed.) Citation

Ketchum, R. M. What is communismn. E.P. Dutton.

Chicago Style (17th ed.) Citation

Ketchum, Richard M. What Is Communismn. New York: E.P. Dutton.

MLA (9th ed.) Citation

Ketchum, Richard M. What Is Communismn. E.P. Dutton.

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