Sarjoko, Moh. 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):44-56. https://doi.org/10.26740/vt.v6n1.p44-56.