Barrons Educational Series · Polair Publishing
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Color Decoder: Unlock Your Physical, Spiritual, and Emotional Potential | 978-0-7641-1887-6 (0-7641-1887-0) | 2001 |
| Your Inner Spectrum of Light: The Transforming Power of Colour | 978-0-9545389-8-9 (0-9545389-8-6) | 2004 |