| title | ISBN-13 | year of publication |
|---|---|---|
| A Splendid Pillar: Images of the Axis Mundi in the Grail Romances | 978-1-872883-16-8 | 1992 |
| Explore Shamanism | 978-1-872883-68-7 | 2003 |
| Straight Track, Crooked Road: Leys, Spirit Paths and Shamanism | 978-1-872883-50-2 | 1998 |
| The Bleeding Lance: Myth, Ritual and the Grail Legend | 978-1-872883-17-5 | 1992 |
| The Questing Beast and Other Cosmic Dismemberments | 978-1-872883-23-6 | 1993 |
| Ymir's Flesh | 978-1-872883-45-8 | 1996 |