- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 1984
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 2004
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 1999
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 1976
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 2000