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Simamora H, Nuraeni BE, Junianto P. The Influence Of Promotion, Product Variation And Service Quality On Purchasing Decisions At SRC Hutasoit Batu Aji Store, Batam City. TJEM [internet]. 30 Oktober 2025 [dikutip 31 Januari 2026];8(2):215-26. tersedia pada: https://journal.stiebpbatam.ac.id/tractare/article/view/181