Cita APA

Koestler, A. 1., & Koestler, A. 1. (1961). Darkness at noon. New York, New York: New American Library.

Citación estilo Chicago

Koestler, Arthur 1905-1983, y Arthur 1905-1983 Koestler. Darkness At Noon. New York, New York: New American Library, 1961.

Cita MLA

Koestler, Arthur 1905-1983, y Arthur 1905-1983 Koestler. Darkness At Noon. New York, New York: New American Library, 1961.