APA (7th ed.) Citation

Koestler, A. (1974). The heel of Achilles: Essays 1968 - 1973 (1. publ.). Hutchinson.

Chicago Style (17th ed.) Citation

Koestler, Arthur. The Heel of Achilles: Essays 1968 - 1973. 1. publ. London: Hutchinson, 1974.

MLA (9th ed.) Citation

Koestler, Arthur. The Heel of Achilles: Essays 1968 - 1973. 1. publ. Hutchinson, 1974.

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