McBenedict, B. M., H. Wanke, B. Hang’ ombe, and P. M. Chimwamurombe. “Bacteriological Analysis of Household Water from Hand-Dug Wells in the Cuvelai-Etosha Basin of Namibia”. International Science and Technology Journal of Namibia, Mar. 2018, pp. 023-32, https://journals.unam.edu.na/index.php/ISTJN/article/view/1213.