M. Ball · Martin B · Martin Ball · W. Ball
| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Mushroom Wisdom: How Shamans Cultivate Spiritual Consciousness | 978-1-57951-036-7 (1-57951-036-1) | 2006 |
| Sage Spirit: Salvia Divinorum and the Entheogenic Experience | 978-0-615-15708-5 (0-615-15708-4) | 2007 |