- Selbständig Englisch lernen: Englisch-Deutsch für Anfänger · 2012
- Learn Kimaasai (Beginner's Audio Book in English and Kimaasai) · 2012
- Beginner's Audio Book For English and Polish · 2011
- Beginner's Audio Book For English and Polish · 2011
- Beginner's Audio Book For English and Polish · 2011
- Beginner's Audio Book For English and Polish · 2011
- Beginner's Audio Book For English and Polish · 2011
- Beginner's Audio Book For English and Polish · 2011
- Beginner's Audio Book For English and Polish · 2011
- Beginner's Audio Book For English and Polish · 2011
- Beginner's Audio Book For English and Polish · 2011
- Beginner's Audio Book For English and Polish · 2011
- Beginner's Audio Book For English and Polish · 2011