Anwar, Miftahol, LIfatin Nada, Feri Zain, and Mohammad Amin. “Radio Suara Surabaya’s Marketing Communication Strategy In Seeking Advertising Clients”. Golden Ratio of Data in Summary 5, no. 4 (September 20, 2025): 135–142. Accessed July 6, 2026. https://goldenratio.id/index.php/grdis/article/view/1666.