| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Allies, Contacts, Enemies and Rivals | 978-0-9560893-3-5 (0-9560893-3-X) | 2010 | John Griffiths · David Billinghurst |
| Career Book 1: Book 1 | 978-0-9560893-1-1 (0-9560893-1-3) | 2008 | |
| Career Book 2 | 978-0-9560893-2-8 (0-9560893-2-1) | 2009 | |