APA (7th ed.) Citation

Clark, J. (1998). The UFO book: Encyclopedia of the extraterrestrial. Visible Ink Press.

Chicago Style (17th ed.) Citation

Clark, Jerome. The UFO Book: Encyclopedia of the Extraterrestrial. Detroit, MI: Visible Ink Press, 1998.

MLA (8th ed.) Citation

Clark, Jerome. The UFO Book: Encyclopedia of the Extraterrestrial. Visible Ink Press, 1998.

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