Kusnadi, Adhi, and Edwin Kurniawan. “Implementation of Topsis Method In Web Based System Recommendations For Students Laptop Selection (Case Study: Bhinneka.Com)”. IJNMT (International Journal of New Media Technology) 4, no. 1 (June 30, 2017): 42-45. Accessed January 18, 2020. http://ejournals.umn.ac.id/index.php/IJNMT/article/view/537.