1. John Rawls, A Theory of Justice, Cambridge, Harvard University Press, 1971;
2. Robert Nozick, Anarchy, State and Utopia, New York, Basic Books, 1974;
3. Ronald Dworkin, Taking Rights Seriously, Cambridge, Harvard University Press, 1978;
4. Bruce Ackerman, Social Justice in the Liberal State, New Haven, Yale University Press, 1980.
5. Steven Lukes, Essays in Social Theory, New York, Columbia University Press, 1977, p. 189. For Lukes’ position on cognitive and moral relativism, see Essays 7 & 8.