Nursani Btr R. Islamic Work Ethics and Service Quality on Banking Performance at Bank Sumut Syariah Medan Branch. j.emak, j.emak [Internet]. 2022 May 28 [cited 2025 Jun. 1];3(3):727 –736. Available from: https://penerbitadm.pubmedia.id/index.php/jurnalemak/article/view/582