APA (7th ed.) Citation

Russell, E. F. (1986). Sentinels from space (First Ballantine books edition.). Ballantine Books.

Chicago Style (17th ed.) Citation

Russell, Eric Frank. Sentinels from Space. First Ballantine books edition. New York: Ballantine Books, 1986.

MLA (9th ed.) Citation

Russell, Eric Frank. Sentinels from Space. First Ballantine books edition. Ballantine Books, 1986.

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