- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 1999
- Author: Friedrich Engels
- Language: French
- Year: 2013
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 2000
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 2010
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 1999
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 2013
- Author: Karl Marx Friedrich Engels
- Language: German
- Year: 2003
- Author: Friedrich Engels
- Language: German
- Year: 2010