1. Ewing, A. C. (1947) The Definition of Good (London: Macmillan).
2. Joseph, H. W B. (1931) Some Problems in Ethics (Oxford: Clarendon Press).
3. Moore, G. E. (1903) Principia Ethica (Cambridge University Press).
4. Moore, G. E. (1912) Ethics (Cambridge University Press).
5. Ross, Sir W. D. (1930) The Right and the Good (Oxford: Clarendon Press).