| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Profi 1 Podrecznik + CD | 978-83-262-0067-0 (83-262-0067-0) | 2010 |
| Profi 2 Podrecznik | 978-83-262-0292-6 (83-262-0292-4) | 2011 |
(D-R) · Dittrich Roland Baier Gabi · Dittrich Roland Frey Evelyn · Dittrich Roland Kujawa Barbara Multaska Magorzata · Dittrich Roland und Evelyn Frey · Roland Dittrich