APA (7th ed.) Citation

Koestler, A. (1967). The act of creation (A Laurel ed.). Dell.

Chicago Style (17th ed.) Citation

Koestler, Arthur. The Act of Creation. A Laurel ed. New York: Dell, 1967.

MLA (9th ed.) Citation

Koestler, Arthur. The Act of Creation. A Laurel ed. Dell, 1967.