Korb, Vanessa, Devapregasan Moodley, and Anil Chuturgoon. 2010. “Apoptosis-Promoting Effects of Sutherlandia Frutescens Extracts on Normal Human Lymphocytes in Vitro”. South African Journal of Science 106 (1/2): 64-69. https://sajs.co.za/article/view/10191.