Pratiwi, Arifania, and Indah Kusumasari. “Digital Marketing Strategy at SOD Group in Increasing Interest in Purchasing Concert Tickets Sounds of Downtown Festival in Surabaya”. Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE) 9, no. 1 (October 21, 2025): 242-252. Accessed May 1, 2026. https://e-journal.uac.ac.id/index.php/iijse/article/view/7202.