Muttaqin, Muh Syaukin, et al. “Service Quality of Distributors in the Islamic Perspective (A Study on Retail Consumers in Air Hitam Village, North Sumatra)”. Sahwahita: Community Engagement Journal, vol. 3, no. 1, Feb. 2026, pp. 14-21, doi:10.69965/sahwahita.v3i1.224.