Ridhwan US, Milyartini R, Latifah D. Study of The Violin Book for The Development of Beginner Level Violin Teaching Materials Based on National Song. Gondang [Internet]. 2023 Jun. 12 [cited 2025 Feb. 23];7(1):104-15. Available from: http://103.242.233.34/index.php/GDG/article/view/45978