| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Inner Paths to Outer Space: Journeys to Alien Worlds through Psychedelics and Other Spiritual Technologies | 978-1-59477-224-5 (1-59477-224-X) | 2008 | Rick Strassman MD · Slawek Wojtowicz · Luis Eduardo Luna |