Manullang YB, Efendi, Siregar L, Sherly, Wijaya A. The Effect of Service Quality and Product Variety on Customer Loyalty with Customer Satisfaction as a Mediating Variable at Mitra Swalayan in Pujud District. IJATSS [Internet]. 2026 Nov. 2 [cited 2026 Nov. 2];4(10):1273-88. Available from: https://journalijatss.my.id/index.php/ijatss/article/view/2