Muhammad Ardi Wirawan, and Ugy Soebiyantoro, S.E., M.M. “Analisis Pemasaran Digital Terhadap Keputusan Investasi Nasabah Di PT Valbury Asia Futures Surabaya”. RIGGS: Journal of Artificial Intelligence and Digital Business 5, no. 2 (July 24, 2026): 18652–18663. Accessed November 4, 2026. https://journal.ilmudata.co.id/index.php/RIGGS/article/view/5154.