Marpaung, Udur Mega, et al. “Analysis Of Customer Satisfaction With Solaria Restaurants In Medan City Using K-Means Clustering Method”. Jurnal Sistem Informasi Dan Ilmu Komputer, vol. 8, no. 1, Sept. 2024, pp. 202-14, https://jurnal.unprimdn.ac.id/index.php/jusikom/article/view/5638.