| title | media type | ISBN-13 | year of publication | |
|---|---|---|---|---|
| Cheeky Monkey | Paperback | 978-0-19-272549-3 | 2006 | |
| Cheeky Monkey | Hardcover | 978-0-19-279094-1 | 2006 | |
| Frankenstein's cat | Paperback | 978-0-439-40331-3 | 2002 | |
| Frankenstein's Cat | Hardcover | 978-0-689-84695-3 | 2001 | |
| My Daddy | " | 978-0-00-722164-6 | 2006 | |
| My Daddy | Paperback | 978-0-00-712255-4 | 2004 | |
| WEREWORLD - Der Zorn der Löwen | Taschenbuch | 978-3-570-40163-7 | 2013 | |
| WEREWORLD - Die Rückkehr der Wölfe | " | 978-3-570-40110-1 | 2012 | |
| Wereworld: Nest of Serpents | Paperback | 978-0-14-134050-0 | 2012 | |
| Wereworld: Rage of Lions | " | 978-0-14-133340-3 | 2011 | |
| Wereworld: Rise of the Wolf | " | 978-0-14-133339-7 | 2011 |
Bertelsmann · HarperCollins · Oxford University Press · Penguin · Scholastic · Simon & Schuster