- Author: Iris Petzold, Nadja Ringel, Alexander Thomas
- Language: German
- Year: 2015
- Author: Alexander Thomas, Eberhard Schenk, Wolfgang Heisel
- Language: German
- Year: 2015
- Author: Stefan Schmid, Alexander Thomas
- Language: German
- Year: 2016
- Author: Renate Ferres, Friederike Meyer-Belitz, Bettina Röhrs, Alexander Thomas
- Language: German
- Year: 2005
- Author: Stefan Kammhuber, Eva-Ulrike Kinast, Sylvia Schroll-Machl, Alexander Thomas
- Language: German
- Year: 2009
- Author: Eva-Ulrike Kinast, Sylvia Schroll-Machl, Alexander Thomas
- Language: English
- Year: 2010
- Author: Melanie Maurus, Alexander Thomas, Daniela Weis
- Language: German
- Year: 2014
- Author: Mariela I. Georg, Carlos Kölbl, Alexander Thomas
- Language: German
- Year: 2015
- Author: Saskia Lackner, Alexander Thomas
- Language: German
- Year: 2013
- Author: Andrea Hufnagel, Alexander Thomas
- Language: German
- Year: 2006