| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Complete Idiot's Guide to the Power of the Enneagram | 978-1-59257-694-4 (1-59257-694-X) | 2007 | M. Ed., Herb Pearce |
| The Complete Idiot's Guide to the Secrets of Longevity | 978-1-59257-740-8 (1-59257-740-7) | 2008 | M.D., Kandeel Judge · M.D., Maxine Barish-Wreden |