| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Quest: A Search for the Grail of Immortality | 978-0-595-20124-2 (0-595-20124-5) | 2002 | Camelot Press |
| The Word: Welsh Witchcraft, The Grail of Immortality And The Sacred Keys | 978-0-595-25808-6 (0-595-25808-5) | 2002 | Taliesin enion Vawr ยท Merriddin Gawr |