| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Nadaj zyciu kierunek | 978-83-927125-4-1 (83-927125-4-4) | 2013 | Johannes Huger · Marcus Mockler |
| Where Is Your Lighthouse: Navigate Your Life and Take Charge of Your Own Future | 978-1-904879-10-7 (1-904879-10-1) | 2005 | Johannes Huger · Marcus Mockler |
J.K · J. W. · Jörg W. Knoblauch · Jorg Knoblauch · W. K.