Agit Bagus Hartadi, and Bagus Susetyo. 2026. “The Management of Extracurricular Marching Band Instruction: A Case Study of the Gema Dirgantara Marching Band at SMP Negeri 3 Kroya”. Jurnal Ragam Pengabdian 3 (1 (Spesial Issue): 833-44. https://doi.org/10.62710/5e8phq87.