Tambunan E, Zainarti Z. Analysis of Service Quality Levels for Social Security Administrator (BPJS) Participants and non-BPJS (Case Study of Ofa Padang Mahondang Village). IIJSE [Internet]. 1Aug.2023 [cited 28May2026];6(3):1500-18. Available from: https://e-journal.uac.ac.id/index.php/iijse/article/view/3775