Vincente-Juan Ballester- Olmos. Catalogue of 200 Type-1 UFO Events in Spain and Portugal. Center for UFO Studies, 1974.🔻
Ray Stanford. Socorro Saucer in a Pentagon Pantry. Blueapple Books
Eric Zurcher. Les Apparitions d 'humanoides. Alain-Lefeuvre, 1979.
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Keith Basterfield. UFOs: A Report on Australian Encounters. Reed, 1997.
Nigel Watson. The Alien Deception: an Exploration of the Alien Abduction Phenomenon. YouWriteOn.com, 2009. 🔻
Whitley Strieber, Confirmation. Simon and Schuster 1998.
Patrick Huyghe. The Field Guide to Extraterrestrials. Avon Books, 1996.
Robert E. Bartholomew, and George S. Howard. UFOs and Alien Contact: Two Centuries of Mystery. Prometheus Books, 1998.
Terry Le Riche Walters. Who on Earth am I? Psychic, Alien and Paranormal Experiences. Amora, Ringwood, Hants, 1997.
