APA citiranje

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

Trích dẫn kiểu Chicago

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

MLA citiranje

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

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