APA (7th ed.) Citation

Koestler, A. (1979). Janus: A summing up. Vintage Books.

Chicago Style (17th ed.) Citation

Koestler, Arthur. Janus: A Summing Up. New York: Vintage Books, 1979.

MLA (9th ed.) Citation

Koestler, Arthur. Janus: A Summing Up. Vintage Books, 1979.

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