Royani I, Rivana A, Parulian Sihombing T. The Influence of Brand Image and Viral Marketing on Purchase Decisions of Kokumi Products in Medan Selayang District. SEMBJ [Internet]. 2026Feb.19 [cited 2026Jun.28];7(1):411-27. Available from: https://siducat.org/index.php/sembj/article/view/2374