| title | ISBN-13 | year of publication |
|---|---|---|
| Kooks: A Guide to the Outer Limits of Human Belief | 978-0-922915-67-5 | 2001 |
| Kooks, A Guide to the Outer Limits of Human Belief | 978-0-922915-19-4 | 1994 |
| Kooks A Guide to the Outer Limits of Human Belief | 978-0-922915-20-0 | 1994 |
| Strange Creations: Aberrant Ideas of Human Origins from Ancient Astronauts to Aquatic Apes | 978-0-922915-65-1 | 2001 |