- Author: Gisela Boeck
- Language: German
- Year: 2018
- Author: Gisela Boeck Ulrike Bommas-Ebert Timo Brandenburger
- Language: German
- Year: 2009
- Author: Gisela Boeck, Ruth Hammelehle, Wolfgang Zettlmeier
- Language: German
- Year: 2008
- Author: Gisela Boeck
- Language: German
- Year: 2008
- Author: Gisela Boeck
- Language: German
- Year: 2003
- Author: Gisela Boeck
- Language: German
- Year: 2003
- Author: Gisela Boeck
- Language: German
- Year: 2008