- Author: Heike Behrens (editor), Stefan Pfänder (editor)
- Language: English
- Year: 2016
- Author: Peter Auer (editor), Stefan Pfänder (editor)
- Language: English
- Year: 2011
- Author: Heike Behrens (editor), Stefan Pfänder (editor)
- Language: English
- Year: 2016
- Author: Stefan Pfänder, Juan Ennis, Mario Soto, España Villegas
- Language: Spanish
- Year: 2010