De Kock, KN, CT Wolmarans, and M Bornman. “Distribution and Habitats of <i>Biomphalaria pfeifferi</i>, Snail Intermediate Host of <i>Schistosoma mansoni</I>, in South Africa”. Water SA 30, no. 1 (August 3, 2004): 29–36. Accessed August 2, 2026. https://www.ajol.info/index.php/wsa/article/view/5023.