- Sight Unseen: Science, UFO Invisibility and Transgenic Beings by Budd Hopkins, Carol Rainey, 2004-09-28
- Captured! The Betty and Barney Hill UFO Experience: The True Story of the World's First Documented Alien Abduction by Stanton T. Friedman, Kathleen Marden, 2007-07-23
- UFO: Albert Watson by Gail Buckland, 2010-11-01
- The UFO Magazine UFO Encyclopedia: The Most Compreshensive Single-Volume UFO Reference in Print by William J. Birnes, 2004-01-06
- The Thinking Person's UFOBook by Gordon Chism, 2009-02-05
- Expediente SOVIET UFO / The SOVIET UFO Files (Investigacion Abierta / Open Investigation) (Spanish Edition) by Paul Stonehill, Philip Mantle, 2010-05-11
- Big Book of UFOs by Chris Rutkowski, 2010-09-20
- The UFO Experience: A Scientific Inquiry by J. Allen Hynek, 1998-12-21
- UFOs: Myths, Conspiracies, and Realities by John B. Alexander Ph.D., 2011-02-15
- The Truth About the Ufo Crash at Roswell by Kevin D.; Schmitt, Donald R. Randle, 1997
- Maury Island UFO: The Crisman Conspiracy by Kenn Thomas, 1999-10-01
- Inside UFO 54-40 (Choose Your Own Adventure #12) by Edward Packard, 1982-07-01
- Man-Made UFOs 1944-1994: 50 Years of Suppression by Renato Vesco, David Hatcher Childress, 1995-02
- UFOs: What Scientists Say May Shock You! (24/7: Science Behind the Scenes) by N. B. Grace, 2008-03
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