S R · Stan Raatz · Sten Rethage
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Anti-Stress: Meditation Through Coloring | 978-1-74379-187-5 (1-74379-187-9) | 2016 |
| Brain-Science: Coloring for Agility and Fast Learning | 978-1-74379-188-2 (1-74379-188-7) | 2016 |
| Modern Meditation: Coloring For Focus and Creativity | 978-1-74379-189-9 (1-74379-189-5) | 2016 |