Prapanca, A., and R. Hidayat. “EFFECTIVENESS OF THE COMBINATION OF DIGITAL AND TRADITIONAL MEDIA IN PRODUCT MARKETING PROMOTION STRATEGIES”. Jurnal Ekonomi, vol. 12, no. 3, Sept. 2023, pp. 1084-90, https://www.ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/2148.