Pratiwi A, Kusumasari I. Digital Marketing Strategy at SOD Group in Increasing Interest in Purchasing Concert Tickets Sounds of Downtown Festival in Surabaya. IIJSE [Internet]. 21Oct.2025 [cited 1May2026];9(1):242-5. Available from: https://e-journal.uac.ac.id/index.php/iijse/article/view/7202