| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Meditation: Short and to the Point | 978-0-9760768-0-3 (0-9760768-0-2) | 2004 |
| Truth: From Religion to Spirituality | 978-0-9760768-3-4 (0-9760768-3-7) | 2005 |
| What Religion Is Not | 978-0-9760768-2-7 (0-9760768-2-9) | 2005 |