| title | ISBN-13 | year of publication |
|---|---|---|
| Business English Business communication + CD | 978-83-60199-50-3 | 2013 |
| Business english Marketing and advertising + CD | 978-83-60199-49-7 | 2013 |
| Business English Negotiations and presentation z plyta CD | 978-83-60199-51-0 | 2013 |
| Business english Starting a company + CD | 978-83-60199-47-3 | 2014 |