| title | ISBN-13 | year of publication |
|---|---|---|
| Bez skrupulów | 978-83-08-00092-2 | 1979 |
| Dzialka i ja | 978-83-08-00240-7 | 1979 |
| Madryckie ABC | 978-83-207-0052-7 | 1979 |
| Sylwester inspektora Rogosza | 978-83-207-1144-8 | 1989 |
W.S. · Wilhelm Schlag · Wilhelm Scholz · Wilhelm Schulz · Wilhelm Selhus · Wilhelm Szilasi