4
Plamenatz, John Petrov.
| Clarendon Press |
1975
5
Oakeshott, Michael Joseph,
| Cambridge University Press |
1985
6
Fromm, Erich,
| Routledge & Kegan Paul |
1981
7
Geras, Norman,
| Verso Editions and NLB |
1983
8
Searle, John R.
| Cambridge University Press |
1983