“Mekanisme Penanganan Customer service terhadap Complaint Nasabah (Studi Kasus pada Bank Sumatera Utara Cabang Syariah): Customer service Handling Mechanism for Customer Complaints (Case Study at North Sumatra Bank Sharia Branch)” (2023) Experimental Student Experience, 1(1), pp. 41–47. doi:10.58330/ese.v1i1.120.