Books

The Essentials of Business Etiquette: How to Greet, Eat, and Tweet Your Way to Success The Essentials of Business Etiquette: How to Greet, Eat, and Tweet Your Way to Success
2013
The Power of Positive Confrontation The Power of Positive Confrontation
2014
New Rules @ Work New Rules @ Work
2006
The Communication Clinic: 99 Proven Cures for the Most Common Business Mistakes The Communication Clinic: 99 Proven Cures for the Most Common Business Mistakes
2016
Streiten - aber richtig! Streiten - aber richtig!
2001

Audiobooks

The Power of Positive Confrontation The Power of Positive Confrontation
2015
The Communication Clinic : 99 Proven Cures for the Most Common Business Mistakes The Communication Clinic : 99 Proven Cures for the Most Common Business Mistakes
2016