Katarzyna Borkowska
Cover/Jacket Design by 6
| Title | Format | |
|---|---|---|
 | Erynie | Paperback |
 | Liczby Charona | Paperback |
 | Rzeki Hadesu | Hardback |
 | W Otchłani Mroku | Hardback |
 | Władca Liczb | Paperback |
 | Tam Ci Będzie Lepiej | Paperback |
Series Designer 1
| Title | Format | |
|---|---|---|
 | Arena Szczurów | Paperback |