- Author: Spahn Jens
- Language: German
- Year: 2015
- Author: Engelhardt Marc editor
- Language: German
- Year: 2017
- Author: Ecowin bei Benevento Publishing eine Marke der Red Bull Media House GmbH, Johnston David Cay, Trump Donald
- Language: German
- Year: 2016
- Author: Alexander Robin
- Language: German
- Year: 2017