URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/peran-notasi-balok-dalam-pembelajaran-biola-di-lembaga-kursus-musik--studi-kasus-pembelajaran-lagu-klasik-dan-pop-di-jogja-music-school--dcfcd07e645d245babe887e5e2daa016/33fd9e2e-cf00-11ef-8115-00505691351c