2Rawls, John, 1971, A Theory of Justice, Cambridge, Massachusetts : The Belknap Press of Harvard University Press.
3Raz, Joseph, 1986, The Morality of Freedom, Oxford, UK: Clarendon Press.
4Scanlon, T. M. , 1982, "Contractualism and utilitarianism", in Amartya Sen and Bernard Williams (eds.), Utilitarianism and Beyond, Cambridge: Cambridge University Press.
