- Author: Les Todres (auth.)
- Language: English
- Year: 2007
- Author: Business and Technician Education Council (auth.)
- Language: English
- Year: 1986
- Author: Karol M. Wasylyshyn (auth.)
- Language: English
- Year: 2014
- Author: Manfred F R Kets de Vries (auth.)
- Language: English
- Year: 2014
- Author: Rainer Sachse (auth.)
- Language: German
- Year: 2017
- Author: Ina Riechert Edeltrud Habib (auth.)
- Language: German
- Year: 2017
- Author: Daniel Pauw (auth.)
- Language: German
- Year: 2017