B. B. · B&G · Betty G. Birney
| title | ISBN-13 | year of publication |
|---|---|---|
| Klopoty chomika Hubercika | 978-83-280-1318-6 | 2015 |
| Niespodzianki chomika Hubercika | 978-83-280-1319-3 | 2015 |
| Przyjaznie chomika Hubercika | 978-83-280-1190-8 | 2014 |
| Swiat chomika Hubercika | 978-83-280-1189-2 | 2014 |