- Author: Andreas Schulz
- Language: German
- Year: 2014
- Author: Karl-Joachim Hölkeskamp
- Language: German
- Year: 2004
- Author: Maurer Michael
- Language: German
- Year: 2010
- Author: Müller-Luckner Elisabeth, Klippel Diethelm
- Language: German
- Year: 2006
- Author: Ulrich Wilcken
- Language: German
- Year: 1973
OnlineKommunikation: Grundlagen, Praxisfelder und Methoden: Grundlagen, Praxisfelder und Methoden
pdf
- Author: Claudia Fraas
- Language: German
- Year: 2011
- Author: Herbert Bernstein
- Language: German
- Year: 2013
- Author: Nataša Živić
- Language: English
- Year: 2013
- Author: Fadai Dawud, Kohlert Helmut, Sachs Hans-Ulrich
- Language: English
- Year: 2013