E. A. Sinambela and E. T. Aprilianti, “Strategi Mengatasi Erosi Loyalitas Pelanggan di Tengah Intensitas Persaingan Pasar”, EBIS, vol. 1, no. 2, pp. 76–89, Jul. 2011, Accessed: Jun. 02, 2026. [Online]. Available: https://ebis-jurnal.unsuri.ac.id/index.php/ebis/article/view/142