- Author: Marcus Tullius Cicero Karl Bayer Gertrud Bayer
- Language: German, Latin
- Year: 1994
- Author: M. Tullius Cicero Karl Bayer (ed.) Gertrud Bayer (ed.)
- Language: Latin, German
- Year: 1994
- Author: Marcus Tullius Cicero, Karl Bayer, Gertrud Bayer
- Language: German
- Year: 2006