- Author: Roeder Annette
- Language: German
- Year: 2015
- Author: Mühle Jörg, Pflüger Friedrich, Zeltser David
- Language: German
- Year: 2015
- Author: Elson Jane, Obrecht Bettina
- Language: German
- Year: 2014
- Author: cbt, Mühle Jörg, Pflüger Friedrich, Zeltser David
- Language: German
- Year: 2016
- Author: cbt, Janotta Anja, Jeschke Stefanie
- Language: German
- Year: 2016