APA Edition Citation

Koestler, A. (1959). The sleepwalkers: A history of man's changing vision of the universe. Hutchinson.

Chicago Edition Citation

Koestler, Arthur. The Sleepwalkers: A History of Man's Changing Vision of the Universe. London: Hutchinson, 1959.

MLA Edition Citation

Koestler, Arthur. The Sleepwalkers: A History of Man's Changing Vision of the Universe. Hutchinson, 1959.

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