1. Ainslie, G. 2013. Money as MacGuffin: A Factor in Gambling and Other Process Addictions. In Addiction and Self-Control: Perspectives from Philosophy, Psychology, and Neuroscience, ed. N. Levy. Oxford: Oxford University Press.
2. Appiah, A. 1998. Ethical Systems, African. In Routledge Encyclopedia of Philosophy, ed. E. Craig. London: Routledge.
3. Behrens, K. 2018. A Critique of the Principle of “Respect for Autonomy,” Grounded in African Thought. Developing World Bioethics 18 (2): 126–134.
4. Bhengu, M.J. 1996. Ubuntu: The Essence of Democracy. Cape Town: Novalis Press.
5. Bikopo, D., and L.-J. van Bogaert. 2010. Reflection on Euthanasia: Western and African Ntomba Perspectives on the Death of a Chief. Developing World Bioethics 10 (1): 42–48.