WA, W.Nurfahizul Ifwah., M. Shaiful, M.Z Shamsunarnie, Z.M Zainuddin, and M. Fuad. “Genetic Algorithm for Vehicle Routing Problem With Backhauls”. Journal of Science and Technology 4, no. 1 (1). Accessed June 18, 2021. https://publisher.uthm.edu.my/ojs/index.php/JST/article/view/463.