Pallant, C., and V. Steenkamp. “IN VITRO BIOACTIVITY OF VENDA MEDICINAL PLANTS USED IN THE TREATMENT OF RESPIRATORY CONDITIONS”. African Journal of Traditional, Complementary and Alternative Medicines 6 (May 3, 2009): 397–398. Accessed April 28, 2024. https://journals.athmsi.org/index.php/ajtcam/article/view/784.