Pengaruh Variasi Produk, Word Of Mouth, Promosi Dan Layanan Purna Jual Terhadap Keputusan Pembelian. magna [Internet]. 2026 Jul. 29 [cited 2026 Aug. 31];5(2):46-58. Available from: https://ojs.unsiq.ac.id/index.php/magna/article/view/12420