1
Carchedi, Guglielmo.
| Routledge and Kegan Paul |
1977
2
Fine, Ben.
| Columbia University Press |
1979
3
Marx, Karl,
| Goodyear Pub. Co. |
1981
4
Cottrell, Allin,
| Routledge & K. Paul |
1984
5
Cottrell, Allin,
| Routledge & K. Paul |
1984
6
Greenberg, Edward S.
| Little, Brown |
1986