APA (7th ed.) Citation

Keyhoe, D. E. (1953). Flying saucers from outer space ([1st ed.].). Holt.

Chicago Style (17th ed.) Citation

Keyhoe, Donald E. Flying Saucers from Outer Space. [1st ed.]. New York: Holt, 1953.

MLA (9th ed.) Citation

Keyhoe, Donald E. Flying Saucers from Outer Space. [1st ed.]. Holt, 1953.