APA (7th ed.) Citation

Koestler, A. (1948). Darkness at noon. New American Library.

Chicago Style (17th ed.) Citation

Koestler, Arthur. Darkness at Noon. New York: New American Library, 1948.

MLA (9th ed.) Citation

Koestler, Arthur. Darkness at Noon. New American Library, 1948.

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