Libri
Audiolibri
Les 15 lois inestimables de la croissance: Appliquez-les et atteignez votre plein potentiel
2020
Leadershift
2019
Developing the Leader Within You 2.0*
2018
Leadership: Die 21 wichtigsten Führungsprinzipien
2023
The 5 Levels of Leadership (10th Anniversary Edition)
2021
The 21 Irrefutable Laws of Leadership 25th Anniversary
2022