1. The UFO Encylcopedia by Margaret Sachs.
2. Project Moondust by Kevin D. Randle
Page 185-187. Lieutenant Colonel Charles Halt letter to the Royal Air Force Commander.
3. Alien Base by Timothy Good
4. The Emergence of a Phenomenon: UFOs from the Beginning through 1959 By Jerome Clark.
5. UFOs in the 1980s By Jerome Clark.
6. ABC's Peter Jennings UFO special Seeing Is Believing (February 25, 2005)
7. The Definitive Guide To Unidentified Flying Objects And Related Phenomena By David Ritchie.
8. Alien Abduction 2004 DVD - Dr. Roger Leir - Livewire Flix.
9. Intruders - Budd Hopkins
10. The Great Unsolved Mysteries Of Science By John Grant/ Is There Such A Thing As Antigravity?
11. The Abduction Enigma By Kevin D. Randle, Russ Estes, and William P. Cone, Ph.D.
12. Making Contact Edited by Bill Fawcett
13. Need To Know: UFOs, The Military and Intelligence by Timothy Good
14. Out Of This World: Mysteries Of Mind, Space And Time - Black Cat (This edition published in 1989)
15. Mysteries Of The Unexplained - Readers Digest
16. Open Skies, Closed Minds by Nick Pope
17. The Roswell Legacy by Jesse Marcel, JR., and Linda Marcel
18. The Encyclopedia of Extraterrestrial Encounters Edited by Ronald D. Story
19. UFOs Over New York By Preston Dennett - Schiffer
20. The Randle Report - UFOs In The '90s By Kevin D. Randle
21. UFO Chronicles Of The Soviet Union - A Cosmic Samizdat By Jacques Vallee
22. Into the Unknown - Readers Digest (1981)
23. UFO Magazine Issue #153. Vol. 23. No. 12