| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Obsluga klientow Podrecznik Tom 3 | 978-83-02-14714-2 (83-02-14714-1) | 2013 |
| Sprzedaz towarow Podrecznik | 978-83-02-14084-6 (83-02-14084-8) | 2013 |
| Sprzedaz towarow Poradnik metodyczny | 978-83-7544-011-9 (83-7544-011-6) | 2008 |