| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Keepers of Color: A Creative Hero's Journey into the Playful Paradox Called Life | 978-1-5011-6768-3 (1-5011-6768-5) | 2018 |
| The Keepers of Color: A Creative Hero's Journey into the World Within | 978-1-5011-6767-6 (1-5011-6767-7) | 2018 |