| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| 4 amici online! | 978-88-566-1838-9 (88-566-1838-9) | 2011 |
| Banda Spaghetti Sprawa konkursu ciast | 978-83-280-0319-4 (83-280-0319-8) | 2013 |
| Banda Spaghetti Sprawa zaginionego psa | 978-83-280-0320-0 (83-280-0320-1) | 2013 |