- Author: Christoph Sauer
- Language: German
- Year: 2011
- Author: Titus Ensink, Christoph Sauer
- Language: English
- Year: 2003
- Author: Teun A. van Dijk, Christoph Sauer
- Language: German
- Year: 1994
- Author: Titus Ensink (ed.) Christoph Sauer (ed.)
- Language: English
- Year: 2003
- Author: Christoph Sauer (auth.)
- Language: German
- Year: 1998