Kumphan, Thipsuda, Thanyaret Sriyonyot, Arisa Boonwan, and Ubolwan Chantem. 2023. “Vehicle Routing by Using a Saving Algorithm: Community Drinking Water Factory”. Thai Industrial Engineering Network Journal 9 (2):50-57. https://ph02.tci-thaijo.org/index.php/ienj/article/view/249999.