APA (7th ed.) Citation

Trotsky, L. (1973). In defense of Marxism. Pathfinder Press.

Chicago Style (17th ed.) Citation

Trotsky, Leon. In Defense of Marxism. New York: Pathfinder Press, 1973.

MLA (9th ed.) Citation

Trotsky, Leon. In Defense of Marxism. Pathfinder Press, 1973.