- Author: Andreas Beyer (editor)
- Language: German
- Year: 2018
- Author: Martin Wallraff (editor)
- Language: German
- Year: 2016
- Author: Kurt Seelmann (editor)
- Language: German
- Year: 2017
- Author: Martin Wallraff (editor)
- Language: German
- Year: 2016
- Author: Andreas Beyer (editor)
- Language: German
- Year: 2018
- Author: Kurt Seelmann (editor)
- Language: German
- Year: 2017
- Author: Emil Angehrn (editor)
- Language: German
- Year: 2007
- Author: Karl Pestalozzi
- Language: German
- Year: 1999