| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Accetta la sfida. 7 giorni per superare le paure e affrontare ogni cambiamento alla grande | 978-88-502-1741-0 (88-502-1741-2) | 2010 |
| Gulp!: The Seven-Day Crash Course to Master Fear and Break Through Any Challenge | 978-0-553-38498-7 (0-553-38498-8) | 2007 |
| Gulp!: The Seven-day Crash Course to Master Fear and Break Through Any Challenge | 978-0-14-102528-5 (0-14-102528-X) | 2006 |