Staubli, F., and K. Duerbeck. “SIPPO TRADE PROMOTION PROGRAMME OF OSEC FOR MEDICINAL AND AROMATIC PLANTS”. African Journal of Traditional, Complementary and Alternative Medicines 6 (May 4, 2009): 430. Accessed May 8, 2024. https://journals.athmsi.org/index.php/ajtcam/article/view/842.