APA Edition Citation

Koestler, A. (1989). The Act of Creation (1st.). Penguin Books Ltd.

Chicago Edition Citation

Koestler, Arthur. The Act of Creation. 1st. London: Penguin Books Ltd, 1989.

MLA Edition Citation

Koestler, Arthur. The Act of Creation. 1st. Penguin Books Ltd, 1989.

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