AGIT BAGUS HARTADI; BAGUS SUSETYO. The Management of Extracurricular Marching Band Instruction: A Case Study of the Gema Dirgantara Marching Band at SMP Negeri 3 Kroya. Jurnal Ragam Pengabdian, [S. l.], v. 3, n. 1 (Spesial Issue), p. 833–844, 2026. DOI: 10.62710/5e8phq87. Disponível em: https://teewanjournal.com/index.php/juragan/article/view/2522.. Acesso em: 15 oct. 2026.