K.M. · K. R. · m r · M. R. Kopmeyer
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Potega mysli | 978-83-11-13735-6 (83-11-13735-8) | 2015 |
| Urzeczywistnianie marzen | 978-83-11-13737-0 (83-11-13737-4) | 2015 |
| Zdobywanie fortuny | 978-83-11-13738-7 (83-11-13738-2) | 2015 |