N. I. Molefe, A. M. Tsotetsi, A. O. T. Ashafa, and O. M. M. Thekisoe, “In vitro anthelmintic effects of Artemisia afra and Mentha longifolia against parasitic gastro-intestinal nematodes of livestock”, Bangladesh J Pharmacol, vol. 7, no. 3, pp. 157–163, Aug. 2012.