- Author: Jörg Frey, Benjamin Schliesser
- Language: German
- Year: 2016
- Author: Jörg Frey Jan Rohls Ruben Zimmermann
- Language: German
- Year: 2003
- Author: Jörg Frey (editor) Ursula Schattner-Rieser (editor) Konrad Schmid (editor)
- Language: German
- Year: 2012
- Author: Jörg Frey (editor) Enno Edzard Popkes (editor) Jens Schröter (editor)
- Language: German, English
- Year: 2008
- Author: Jörg Frey, Matthijs Dulk den, Jan van der Watt
- Language: English
- Year: 2019
- Author: Jörg Frey Jan Röhls Ruben Zimmermann
- Language: German
- Year: 2003
- Author: von Jörg Frey Jens Schröter
- Language: German
- Year: 2012
- Author: von Benjamin Schliesser (Herausgeber) Jörg Frey (Autor)
- Language: German
- Year: 2011
