Ferdinand, Ferdinand, Ella Silvana Ginting, and Nasrul Effendi. “The Influence of Price, Promotion and Product Quality on Affinois Purchase Decisions”. International Journal on Social Science, Economics and Art 11, no. 3 (November 30, 2021): 130–136. Accessed May 19, 2026. https://ijosea.isha.or.id/index.php/ijosea/article/view/63.