Cita APA

Koestler, A. 1., & Koestler, A. 1. (1963). The Sleepwalkers; a history of man's changing vision of the universe. New York, New York: Universal Library Grosset and Dunlap.

Citación estilo Chicago

Koestler, Arthur 1905-1983, y Arthur 1905-1983 Koestler. The Sleepwalkers; a History of Man's Changing Vision of the Universe. New York, New York: Universal Library Grosset and Dunlap, 1963.

Cita MLA

Koestler, Arthur 1905-1983, y Arthur 1905-1983 Koestler. The Sleepwalkers; a History of Man's Changing Vision of the Universe. New York, New York: Universal Library Grosset and Dunlap, 1963.