- Author: Diana HC., Rahn Marie, Schroff Laura, Tresniowski Alex
- Language: German
- Year: 2015
- Author: Bloom Cameron, Greive Bradley Trevor, Pannowitsch Ralf
- Language: German
- Year: 2018
- Author: Carlo Philip, Lamatsch Vanessa
- Language: German
- Year: 2013
- Author: Carlo Philip, Lamatsch Vanessa
- Language: German
- Year: 2017