“ANALISIS PERANAN CUSTOMER SERVICE DALAM MANAJEMEN KOMPLAIN CARD ATM (STUDI KASUS BSI KC PADANG IMAM BONJOL)”. Jurnal Ekonomi Dan Bisnis, vol. 2, no. 7, Nov. 2025, pp. 1453-8, https://ecosemica.net/index.php/ECONOMICA/article/view/202.