- Author: Karl Marx Friedrich Engels
- Language: English
- Year: 2008
- Author: Karl Marx Friedrich Engels
- Language: English
- Year: 1978
- Author: Karl Marx Frederick Engels
- Language: English
- Year: 1975
- Author: Karl Marx Frederick Engels
- Language: English
- Year: 1988
- Author: Karl Marx Frederick Engels
- Language: English
- Year: 1995
- Author: Karl Marx Frederick Engels
- Language: English
- Year: 1987
- Author: Karl Marx Martin Nicolaus
- Language: English
- Year: 1973
- Author: Karl Marx Frederick Engels
- Language: English
- Year: 1987