| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Tools to Change the World: Study Guide Based on the Progressive Utilization Theory Level 1 | 978-87-89552-00-2 (87-89552-00-8) | 2019 | Mirra Price |
| Vision Prout: Alternativen jenseits des Kapitalismus | 978-87-89552-45-3 (87-89552-45-8) | 2006 | |