APA (7th ed.) Citation

Plamenatz, J. P. (1947). What is communism? National News-Letter.

Chicago Style (17th ed.) Citation

Plamenatz, John Petrov. What Is Communism? London: National News-Letter, 1947.

MLA (8th ed.) Citation

Plamenatz, John Petrov. What Is Communism? National News-Letter, 1947.