| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Spotkania z ojcem Leonem | 978-83-240-2159-8 (83-240-2159-0) | 2013 |
| Tajemnice zakonu | 978-83-08-04001-0 (83-08-04001-2) | 2008 |
A. K. · A. L. · A. Leon · Artur K. · Artur L · K L · Knabit Leon · s. a. · S.K. · S. L.
Sport, and Territories. Australia. Department of the Environment