APA (7th ed.) Citation

Smith, M. S., & Havas, G. D. (1983). The UFO enigma. Congressional Research Service, Library of Congress.

Chicago Style (17th ed.) Citation

Smith, Marcia S., and George D. Havas. The UFO Enigma. [Washington, DC]: Congressional Research Service, Library of Congress, 1983.

MLA (9th ed.) Citation

Smith, Marcia S., and George D. Havas. The UFO Enigma. Congressional Research Service, Library of Congress, 1983.

Warning: These citations may not always be 100% accurate.