| title | ISBN-13 | year of publication | |
|---|---|---|---|
| Coaching personal | 978-84-342-3061-3 | 2005 | |
| Lebe deine Träume: Werden Sie zu dem Menschen, der Sie immer sein wollten | 978-3-89736-275-8 | 2008 | |
| Life Coach: Become the Person You've Always Wanted to Be | 978-0-600-61320-6 | 2006 | |
| Life Coach: Become the Person You've Always Wanted to Be | 978-0-600-60931-5 | 2004 |
Edition XXL · Hamlyn · Parramón