Kontribusi Solidaritas Pekerja Musik Indonesia (SPMI) terhadap Pemain Biola Jalanan Otodidak di Lapangan Merdeka Medan. OSTINATO: Journal of Music Study and Research, [S. l.], v. 2, n. 1, p. 1–12, 2025. DOI: 10.67575/ostinato.v2i1.13. Disponível em: https://ostinato.silatene.org/index.php/ostinato/article/view/13. Acesso em: 19 aug. 2026.