Chokoe, P. K., P. Masoko, M. P. Mokgotho, R. L. Howard, and L. J. Mampuru. “THE EFFECT OF SEASONAL CHANGE ON THE ANTIBACTERIAL ACTIVITY OF C. EDULIS”. African Journal of Traditional, Complementary and Alternative Medicines, vol. 6, May 2009, p. 389, https://athmsi.org/journals/index.php/ajtcam/article/view/768.