APA aipamena

Koestler, A. (1941). Darkness at noon. New York: The New American library.

Chicago Style aipamena

Koestler, Arthur. Darkness At Noon. New York: The New American library, 1941.

MLA aipamena

Koestler, Arthur. Darkness At Noon. New York: The New American library, 1941.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.