“BARRIERS AND STRATEGIES OF CUSTOMER SERVICE IN RESOLVING CUSTOMER COMPLAINTS” (2026) ERRABHA: Journal of Sharia Economics, 1(1), hlm. 26–32. Tersedia pada: https://errabha.ekos.staisalafiyahbangil.ac.id/errabha/article/view/7 (Diakses: 31 Juli 2026).