Sorongan, Erick, Saiful Ghozi, Emil Azmanajaya, and Hilmansyah Hilmansyah. “Perancangan Dan Implementasi Alat Backwash Air Layak Konsumsi”. Jurnal Abdimas Mahakam 3, no. 1 (January 31, 2019): 9-17. Accessed October 17, 2021. https://journal.uwgm.ac.id/index.php/abdimasmahakam/article/view/405.