| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Como Utilizar Lo Que Tienes Para Conseguir Lo Que Quieres | 978-84-9735-206-2 (84-9735-206-8) | 2005 |
| The Happiness Choice: The Five Decisions That Will Take You From Where You Are to Where You Want to Be | 978-1-118-49316-8 (1-118-49316-8) | 2013 |