“Implementation of Weight Aggregated Sum Product Assessment (WASPAS) on the Selection of Online English Course Platforms”. CESS (Journal of Computer Engineering, System and Science) 8, no. 2 (July 31, 2023): 564–575. Accessed March 22, 2026. https://jurnal.unimed.ac.id/2012/index.php/cess/article/view/48929.