APA (7th ed.) Citation

Crossman, R. H. S., & Koestler, A. (1949). The God that failed ([1st ed.].). Harper.

Chicago Style (17th ed.) Citation

Crossman, R. H. S., and Arthur Koestler. The God That Failed. [1st ed.]. New York: Harper, 1949.

MLA (9th ed.) Citation

Crossman, R. H. S., and Arthur Koestler. The God That Failed. [1st ed.]. Harper, 1949.