Denosta, Princes Eunice. “Drinking Water Quality, Usage Practices, and Waterborne Disease Incidence in Barangay Napsan, Puerto Princesa City, Philippines”. American Journal of Environment and Climate 4, no. 3 (November 10, 2025): 100–110. Accessed November 10, 2025. https://journals.e-palli.com/home/index.php/ajec/article/view/4723.