| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Michael's Gemstone Dictionary: Metaphysical Properties of Gems and Minerals | 978-0-942663-05-1 (0-942663-05-5) | 1990 | Michael · Judithann David |
| Michael: The Basic Teachings | 978-0-942663-01-3 (0-942663-01-2) | 1988 | Aaron Christeaan · M. C. Clark |