Óscar E. Gallor Beleño, “Un Acercamiento al Cine Sonoro”, kaminu, vol. 1, no. 2, pp. 55–60, Nov. 2021, Accessed: Jan. 23, 2026. [Online]. Available: https://revistas.usergioarboleda.edu.co/index.php/kaminu/article/view/2116