APA (7th ed.) Citation

Jackson, R. (1992). U.F.O.s: The sightings of alien people and spacecraft from the earliest centuries to the present day. Smithmark Publishers Inc..

Chicago Style (17th ed.) Citation

Jackson, Robert. U.F.O.s: The Sightings of Alien People and Spacecraft from the Earliest Centuries to the Present Day. United States: Smithmark Publishers Inc., 1992.

MLA (9th ed.) Citation

Jackson, Robert. U.F.O.s: The Sightings of Alien People and Spacecraft from the Earliest Centuries to the Present Day. Smithmark Publishers Inc., 1992.