Free Breath Press · Free Press Ink
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Atme tief - Lebe intensiv: Freude erleben durch Transformative Atmung | 978-0-9890978-0-2 (0-9890978-0-3) | 2013 |
| Breathe Deep Laugh Loudly: The Joy of Transformational Breathing | 978-1-929271-01-6 (1-929271-01-8) | 1999 |