The sleepwalkers : a history of man's changing vision of the Universe

MLA

Koestler, Arthur, and Herbert Butterfield. The Sleepwalkers : a History of Man's Changing Vision of the Universe. 2nd impr. London: Hutchinson, 1959.

APA

Koestler, A., & Butterfield, H. (1959). The sleepwalkers : a history of man's changing vision of the Universe. 2nd impr. London: Hutchinson.

Chicago

Koestler, Arthur, and Herbert Butterfield. The Sleepwalkers: A History of Man's Changing Vision of the Universe. 2nd impr. London: Hutchinson, 1959.