Kareru, P. G., J. M. Keriko, G. M. Kenji, G. T. Thiong’o, A. N. Gachanja, and H. N. Mukiira. “ANTIMICROBIAL ACTIVITIES OF SKINCARE PREPARATIONS FROM PLANT EXTRACTS”. African Journal of Traditional, Complementary and Alternative Medicines, vol. 7, no. 3, Feb. 2010, pp. 214-8, https://journals.athmsi.org/index.php/ajtcam/article/view/1066.