Sadhana, Senyum. “Orkes Keroncong (OK) Mutiara Ross in Surabaya (History, Musical Forms, and Inheritance)”. Virtuoso: Jurnal Pengkajian dan Penciptaan Musik 4, no. 2 (February 28, 2022): 148–156. Accessed May 2, 2024. https://journal.unesa.ac.id/index.php/Virtuoso/article/view/16226.