Wilson, G. “AN ANALYSIS OF TWO BIOACTIVE SECONDARY METABOLITES IN HARPAGOPHYTUM PROCUMBENS DC; HARPAGOSIDE AND VERBASCOSIDE IN VITRO AND IN VIVO”. African Journal of Traditional, Complementary and Alternative Medicines 6 (May 2, 2009): 364–365. Accessed February 23, 2025. https://journals.athmsi.org/index.php/ajtcam/article/view/727.