- Author: Fritz Schulz
- Language: German
- Year: 2003
- Author: H. Kantorowicz (editor), Fritz Schulz (editor)
- Language: German
- Year: 1920
- Author: Fritz Schulz
- Language: German
- Year: 1925
- Author: Ulpianus (editor), Fritz Schulz (editor)
- Language: German
- Year: 1926
- Author: Fritz Schulz
- Language: German
- Year: 1931
- Author: Fritz Schulz
- Language: English
- Year: 1936
- Author: Fritz Schulz
- Language: Spanish
- Year: 1960
- Author: Fritz Schulz
- Language: English
- Year: 1963
- Author: Fritz Schulz
- Year: 1936
- Author: Fritz Schulz
- Language: English
- Year: 1946