1. Appel, J.M. 2005. Defining death: when physicians and families differ. Journal of Medical Ethics 31: 641–642.
2. Barkow, J.H., L. Cosmides, and J. Tooby (eds.). 1992. The adapted mind: Evolutionary psychology and the generation of culture. New York, Oxford: Oxford University Press.
3. Boyd, R., and P.J. Richerson. 1985. Culture and the evolutionary process. Chicago: The University of Chicago Press.
4. Brandt, R. 1967. Ethical relativism. In The encyclopedia of philosophy, vol. 3, ed. Paul Edwards, 75–78. New York: Macmillan.
5. Brody, H. 1997. Medical bioethics and cultural diversity. Indian Journal of Pediatrics 64: 277–284.