The Impact of Marketing Synergy: An Analysis of the Influence of Promotion Mix Strategy, Service Quality, on Purchase Decisions at Indomaret Gading, Prambon, Nganjuk. Proceeding Kilisuci International Conference on Economic & Business, [S. l.], v. 3, p. 269–279, 2025. DOI: 10.29407/kilisuci.v3i.5957. Disponível em: https://proceeding.unpkediri.ac.id/index.php/kilisuci/article/view/5957. Acesso em: 11 jan. 2026.