APA (7th ed.) Citation

Koestler, A. (1941). Darkness at noon. Modern Library.

Chicago Style (17th ed.) Citation

Koestler, Arthur. Darkness at Noon. N. Y: Modern Library, 1941.

MLA (9th ed.) Citation

Koestler, Arthur. Darkness at Noon. Modern Library, 1941.

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