Otang, W. M., D. S. Grierson, and R. N. Ndip. “CYTOTOXICITY OF THREE SOUTH AFRICAN MEDICINAL PLANTS USING THE CHANG LIVER CELL LINE”. African Journal of Traditional, Complementary and Alternative Medicines, vol. 11, no. 2, Jan. 2014, pp. 324-329., https://journals.athmsi.org/index.php/ajtcam/article/view/2302.