| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| I won't give up. Ediz. inglese | Copertina flessibile | 978-88-6208-019-4 (88-6208-019-0) | 2008 | |
| I won't give up. Ediz. inglese | Copertina rigida | 978-88-6208-028-6 (88-6208-028-X) | 2008 | |
| The Leu Family: Family's Iron | Hardcover | 978-0-9542648-0-2 (0-9542648-0-0) | 2003 | Henk Schiffmacher · Miki Vialetto · Guido Costa |