APA (7th ed.) Citation

Ketchum, R. What is communism? E.P Dutton & Co. Inc.

Chicago Style (17th ed.) Citation

Ketchum, Richard. What Is Communism? New York: E.P Dutton & Co. Inc.

MLA (9th ed.) Citation

Ketchum, Richard. What Is Communism? E.P Dutton & Co. Inc.

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