| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 2007 |
|
The True Meaning of Smekday | Hyperion Books for Children | Novel | |
| October 2007 |
|
Spectrum 14: The Best in Contemporary Fantastic Art | Underwood Books | Nonfiction | 47 |
| October 2007 |
|
Spectrum 14: The Best in Contemporary Fantastic Art | Underwood Books | Nonfiction | 47 |
| May 2009 |
|
The True Meaning of Smekday | Disney/Hyperion Books | Novel | |
| February 2014 |
|
Happy Smekday oder der Tag, an dem ich die Welt retten musste | Ueberreuter | Novel |