Hakim, Adi Lukman, et al. “Kualitas Produk Dan Kualitas Pelayanan Pada Loyalitas Pelayanan: Tinjauan Penelitian”. Journal of Economics, Management, and Business Research, vol. 3, no. 2, Feb. 2023, https://jurnal.umla.ac.id/index.php/JEMBER/article/view/596.