J.K · Justyna Krzton · Ron Mukerji Justyna Krzton
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Testuj Swoj Polski: Slownictwo W Pracy: Level A2/B2: Test Your Polish: Vocabulary at Work | 978-83-60229-67-5 (83-60229-67-8) | 2012 |
| Test Your Polish: Vocabulary: 1 | 978-83-60229-60-6 (83-60229-60-0) | 2011 |
| Test Your Polish: Vocabulary: 2 | 978-83-60229-61-3 (83-60229-61-9) | 2011 |