- Author: Jörg Frey, Esther Marie Joas
- Language: German
- Year: 2018
- Author: Jörg Frey, Uta Poplutz
- Language: German
- Year: 2022
- Author: Jörg Frey, Nadine Ueberschaer
- Language: German
- Year: 2021
- Author: Jörg Frey, Wayne Coppins, Simon Gathercole, Christoph Heilig, Christoph Heilig
- Language: English
- Year: 2018
- Author: Jörg Frey, Kathleen Ess
- Language: English
- Year: 2018
- Author: Uta Poplutz Jörg Frey (Hrsg.)
- Language: German
- Year: 2016
