APA (7th ed.) Citation

Koestler, A. (1964). The act of creation. Macmillan.

Chicago Style (17th ed.) Citation

Koestler, Arthur. The Act of Creation. New York: Macmillan, 1964.

MLA (9th ed.) Citation

Koestler, Arthur. The Act of Creation. Macmillan, 1964.

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