APA (7th ed.) Citation

Ruppelt, E. J. (1956). The report on unidentified flying objects ([1st ed.].). Doubleday.

Chicago Style (17th ed.) Citation

Ruppelt, Edward J. The Report on Unidentified Flying Objects. [1st ed.]. Garden City, N. Y.: Doubleday, 1956.

MLA (9th ed.) Citation

Ruppelt, Edward J. The Report on Unidentified Flying Objects. [1st ed.]. Doubleday, 1956.