Nala, N.P, P. Jagals, and G. Joubert. “The Effect of a Water-Hygiene Educational Programme on the Microbiological Quality of Container-Stored Water in Households”. Water SA 29, no. 2 (February 1, 2003): 171–176. Accessed September 24, 2026. https://www.ajol.info/index.php/wsa/article/view/4852.