Lokot Muda Harahap, et al. “The Influence of Service Quality, Products and Costs on Customer Satisfaction in Saving at Bank Multiarta Sentosa”. Jurnal Manajemen Bisnis Eka Prasetya Penelitian Ilmu Manajemen, vol. 9, no. 1, Mar. 2023, pp. 46-59, https://jurnal.eka-prasetya.ac.id/index.php/MBEP/article/view/294.