M., A.I. et al. 2021. Mortality and Inhibitory Effects of Aqueous and Methanolic Extracts of Artemisia annua L. on Biomphalaria pfeifferi (Krauss) and Shedding of Cercariae: https://dx.doi.org/10.4314/njpar.v42i1.4. Nigerian Journal of Parasitology. 42, 1 (Mar. 2021), 25–30.