Molefe, N. I.; Tsotetsi, A. M.; Ashafa, A. O. T.; Thekisoe, O. M. M. In Vitro Anthelmintic Effects of Artemisia Afra and Mentha Longifolia Against Parasitic Gastro-Intestinal Nematodes of Livestock. Bangladesh J Pharmacol 2012, 7, 157-163.