Zuardi, Muhammad, Nurhayati Nurhayati, and Muslim Marpaung. “MODEL KEPUTUSAN MEMILIH PRODUK BERDASARKAN ATRIBUT PRODUK, PROMOSI DAN KOMITMEN RELIGIUS DALAM MENINGKATKAN LOYALITAS NASABAH PRODUK TABUNGAN DI BANK SUMUT SYARIAH”. istinbath 21, no. 2 (January 28, 2023): 333–350. Accessed February 12, 2026. https://www.istinbath.or.id/index.php/ijhi/article/view/571.