1. Aristotle (1958). The Politics of Aristotle, E. Barker (trans.), Oxford University Press, Oxford.
2. Aristotle (1985). Nicomachean Ethics, T. Irwin (trans.), Hacket Publishing Company, Indianapolis.
3. Brody, B. (1972). ‘Thomson on abortion,’ Philosophy & Public Affairs, 1 (Spring 1972), 335–340.
4. Buchanan, A. & Brock, D.W. (1989). Deciding for Others: The Ethics of Surrogate Decision Making, Cambridge University Press, Cambridge.
5. Buchanan, A., Brock, D.W., Daniels, N., & Wikler, D. (2000). From Chance to Choice: Genetics and Justice, Cambridge University Press, Cambridge.