- Author: Alfred Schmidt
- Language: German
- Year: 1914
- Author: Walter Euchner, Alfred Schmidt
- Language: German
- Year: 1968
- Author: Alfred Schmidt
- Language: German
- Year: 1977
- Author: Alfred Schmidt
- Language: German
- Year: 1976
- Author: Alfred Schmidt
- Language: German
- Year: 1969
- Author: Alfred Schmidt
- Language: Castellano
- Author: Wener Post Alfred Schmidt
- Language: Italian
- Year: 1976
- Author: Dorothee Thommes Alfred Schmidt
- Language: German
- Year: 2016