Long, G. (1990). Examining the earthlight theory: The Yakima UFO microcosm. J. Allen Hynek Center for UFO Studies.
Cita Chicago Style (17a ed.)Long, Greg. Examining the Earthlight Theory: The Yakima UFO Microcosm. Chicago, IL: J. Allen Hynek Center for UFO Studies, 1990.
Cita MLA (8a ed.)Long, Greg. Examining the Earthlight Theory: The Yakima UFO Microcosm. J. Allen Hynek Center for UFO Studies, 1990.
Precaución: Estas citas no son 100% exactas.