- Author: Christiane Ackermann (editor), Ulrich Barton (editor), Anne Auditor (editor), Susanne Borgards (editor)
- Language: German
- Year: 2009
- Author: Christiane Ackermann (editor), Michael Egerding (editor)
- Language: German
- Year: 2015
- Author: Christiane Ackermann (editor), Michael Egerding (editor)
- Language: German
- Year: 2015