Ariwisanto Sianturi, Fricles, Petti Indrayati Sijabat, and Amran Sitohang. “Application of the Rough Set Method to the Level of Customer Satisfaction on Service Quality”. Sinkron : jurnal dan penelitian teknik informatika 5, no. 2 (April 5, 2021): 266-274. Accessed April 28, 2026. https://jurnal.polgan.ac.id/index.php/sinkron/article/view/10863.