Manullang, Yesika Br, et al. “The Effect of Service Quality and Product Variety on Customer Loyalty With Customer Satisfaction As a Mediating Variable at Mitra Swalayan in Pujud District”. The International Journal of Advanced Technology and Social Sciences, vol. 4, no. 10, Nov. 2026, pp. 1273-88, doi:10.59890/ijatss.v4i10.2.