Theresia Uli Ritonga and Enda Yunita Surbakti 2024. Influence of Price and Promotion on the Purchasing Decision of Event Organizer Services PT Showbitz Mitra Utama Medan. Jurnal Manajemen Bisnis Eka Prasetya Penelitian Ilmu Manajemen. 10, 1 (Mar. 2024), 65–80. DOI:https://doi.org/10.47663/jmbep.v10i1.333.