| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| June 2005 |
|
Gespensterjäger auf eisiger Spur | Loewe | Chapbook | |
| August 2006 |
|
Ghosthunters and the Incredibly Revolting Ghost! | Chicken House / Scholastic | Chapbook | |
| August 2006 |
|
Ghosthunters and the Incredibly Revolting Ghost! | Chicken House / Scholastic | Chapbook | |
| August 2006 |
|
Ghosthunters and the Incredibly Revolting Ghost! | Chicken House / Scholastic | Chapbook | bp |