- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 1989
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 1984
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 2013
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 2003
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 1985
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 2001