APA (7th ed.) Citation

Koestler, A. (1965). Darkness at noon. Jonathan cape.

Chicago Style (17th ed.) Citation

Koestler, Arthur. Darkness at Noon. London: Jonathan cape, 1965.

MLA (9th ed.) Citation

Koestler, Arthur. Darkness at Noon. Jonathan cape, 1965.

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