APA (7th ed.) Citation

Kingsley, S., & Koestler, A. (1951). Darkness at noon: A play based on the novel by Arthur Koestler. Random House.

Chicago Style (17th ed.) Citation

Kingsley, Sidney, and Arthur Koestler. Darkness at Noon: A Play Based on the Novel by Arthur Koestler. New York: Random House, 1951.

MLA (9th ed.) Citation

Kingsley, Sidney, and Arthur Koestler. Darkness at Noon: A Play Based on the Novel by Arthur Koestler. Random House, 1951.