Cita APA (7a ed.)

Koestler, A. (1941). Darkness at noon. Macmillan.

Cita Chicago Style (17a ed.)

Koestler, Arthur. Darkness at Noon. New York: Macmillan, 1941.

Cita MLA (8a ed.)

Koestler, Arthur. Darkness at Noon. Macmillan, 1941.