APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Koestler, Arthur. The Act of Creation. London: Penguin, 1964.

MLA (8th ed.) Citation

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

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