The Impact of Marketing Synergy: An Analysis of the Influence of Promotion Mix Strategy, Service Quality, on Purchase Decisions at Indomaret Gading, Prambon, Nganjuk. Kilisuci [Internet]. 2025 Jun. 5 [cited 2026 Jan. 11];3:269-7. Available from: https://proceeding.unpkediri.ac.id/index.php/kilisuci/article/view/5957