[de] Das Blut von Aliens · Was der Rhesus-Faktor uns über unsere außerirdische Herkunft sagt AMRA Verlag

[en] Nessie · Exploring the Supernatural Origins of the Loch Ness Monster Llewellyn Publications

[en] Paranormal Parasites Llewellyn Publications

[en] Nessie Llewellyn Publications

[en] Shapeshifters Llewellyn Publications

[en] Flying Saucers from the Kremlin Lisa Hagan Books

[en] Flying Saucers from the Kremlin · UFOs, Russian Meddling, Soviet Spies & Cold War Secrets Lisa Hagan Books

[en] The World's Weirdest Places New Page Books

[en] The Real Men in Black New Page Books

[en] Keep Out! · Top Secret Places Governments Don't Want You to Know About New Page Books

[en] The Pyramids and the Pentagon New Page Books

[en] FINAL EVENTS and the Secret Government Group on Demonic UFOs and the Afterlife Anomalist Books

[en] Area 51 Visible Ink Press

[en] Weapons of the Gods New Page Books

[en] Monster Files · A Look Inside Government Secrets and Classified Documents on Bizarre Creatures and Extraordinary Animals New Page Books

[en] Contactees: A History of Alien-Human Interaction Career Press, Incorporated

[en] The Martians: Evidence of Life on the Red Planet New Page Books

[en] Top Secret Alien Abduction Files: What the government doesn't want you to know Disinformation Books

[en] Body Snatchers in the Desert Simon & Schuster

[en] Monsters of the Deep Visible Ink Press