| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Gladstone's School For World Conquerors | 978-1-60706-115-1 (1-60706-115-5) | 2011 | Mark Andrew Smith |
| Princess Ai: Rumors from the Other Side | 978-1-4278-0822-6 (1-4278-0822-8) | 2008 | Hans Steinbach · Misaho Kujiradou · Steve Buccellato |