APA (7th ed.) Citation

Russell, E. F. (1953). Sentinels from space. Ace.

Chicago Style (17th ed.) Citation

Russell, Eric Frank. Sentinels from Space. New York: Ace, 1953.

MLA (9th ed.) Citation

Russell, Eric Frank. Sentinels from Space. Ace, 1953.

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