Sarjoko, M. 2023. Subject of Main Instruments (Violin) Madya Level Course In Music Study Program, Faculty of Languages and Arts, Universitas Negeri Surabaya. Virtuoso: Jurnal Pengkajian dan Penciptaan Musik. 6, 1 (Jun. 2023), 44–56. DOI:https://doi.org/10.26740/vt.v6n1.p44-56.