APA (7th ed.) Citation

Keyhoe, D. E. (1973). Aliens from space: The real story of unidentified flying objects ([1st ed.].). Doubleday.

Chicago Style (17th ed.) Citation

Keyhoe, Donald E. Aliens from Space: The Real Story of Unidentified Flying Objects. [1st ed.]. Garden City, N.Y.: Doubleday, 1973.

MLA (9th ed.) Citation

Keyhoe, Donald E. Aliens from Space: The Real Story of Unidentified Flying Objects. [1st ed.]. Doubleday, 1973.