Kumphan, T., T. . Sriyonyot, A. . Boonwan, and U. . Chantem. “Vehicle Routing by Using a Saving Algorithm: Community Drinking Water Factory”. Thai Industrial Engineering Network Journal, vol. 9, no. 2, Dec. 2023, pp. 50-57, https://ph02.tci-thaijo.org/index.php/ienj/article/view/249999.