Nani N, Halim A, Inzani S.L JFIS. The Effect of Product Differentiation and Brand Image on Purchasing Decisions . GRMAPB [Internet]. 2024 Jun. 30 [cited 2026 Aug. 9];4(2):212-9. Available from: https://www.goldenratio.id/index.php/grmapb/article/view/684