Hardiyanti, T., Paningrum, D., & Sutopo, A. B. (2025). Marketing Mix 9P Strategy in Sustaining a Souvenir Shop Business: Strategi Marketing Mix 9P dalam Mempertahankan Bisnis Toko Souvenir. Indonesian Journal of Innovation Studies, 26(3), 10.21070/ijins.v26i3.1579. Retrieved from https://ijins.umsida.ac.id/index.php/ijins/article/view/1579