Harsanti, Winda, Agus Suhardono, Medi Efendi, Sutikno, and Nadiyah Rahmawati. 2026. “Optimization of Pipe Materials for Water Distribution in Sumbermanjing District, Malang, Using the AHP Method”. Engineering And Technology Journal 11 (04):9367-73. https://doi.org/10.47191/etj/v11i04.06.