Words that Change Minds: Mastering the Language of Influence Words that Change Minds: Mastering the Language of Influence
2010
Wishing, Wanting, Achieving: Personal and Professional Strategic Planning Wishing, Wanting, Achieving: Personal and Professional Strategic Planning
2013
The Customer is Bothering Me The Customer is Bothering Me
2010
Oh nein, schon wieder ein Kunde! Oh nein, schon wieder ein Kunde!
2012
Wort sei Dank Wort sei Dank
2022
Ces mots pour changer les esprits - 2e éd. Ces mots pour changer les esprits - 2e éd.
2023