Putri, Desi Diana, and Lailul Mursyidah. “Quality of Drinking Water Supply Services in Sidoarjo Regency”. Indonesian Journal of Public Policy Review 150 (July 31, 2021): 10.21070/ijppr.v15i0.1134. Accessed July 3, 2024. https://ijppr.umsida.ac.id/index.php/ijppr/article/view/1134.