1. Dhai A. The research ethics evolution: From Nuremberg to Helsinki. S Afr Med J 2014;104(3):178-180.
2. Dhai A. Research vulnerabilities. In: Dhai A (ed). Health Research Ethics: Safeguarding the Interests of Research Participants. Cape Town: Juta, 2019:111- 135.
3. Mbiti J. Introduction to African Religion and Philosophy. Oxford/Portsmouth: Heinemann Educational Books, 1991.
4. Dhai A. Understanding ethics with specific reference to health research. In: Dhai A (ed). Health Research Ethics: Safeguarding the Interests of Research Participants. Cape Town: Juta, 2019:3-31.