Lubis, P. N. and Azhmy, M. F. (2021) “Improving Service Quality as an Effort to Grow Customer Loyalty”, Jurnal Mantik, 5(3), pp. 2108-2116. Available at: https://iocscience.org/ejournal/index.php/mantik/article/view/1865 (Accessed: 19April2026).