1. Fox, M. 1978. “Animal Liberation: A Critique”.Ethics, 88, 106–118.
2. Frey, R.G. 1980.Interests and Rights. Oxford: Clarendon Press.
3. Gophe, M. 2007. “Yengeni’s Spear Starts Two-day Welcome Party”.Cape Argus. 20 January.
4. Gruen, L. 1993. “Animals” in Singer, P (ed).A Companion to Ethics. Oxford: Blackwell.
5. Kymlicka, W. 1995. (Ed).The Rights of Minority Cultures. New York: Oxford University Press.