Development of Modification of Handball Game Facilities for Elementary School Student Learning in Ambarawa District. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, [S. l.], v. 18, n. 1, p. 0469–0481, 2026. Disponível em: https://competitor.idjournal.eu/index.php/competitor/article/view/546. Acesso em: 10 feb. 2026.