Hijria Syahputra (2023) “Improving Learning Outcomes for Volleyball Serving Through PBL in Class X Students of SMK N 1 IDI”, Marga: Journal Of Innovation and Creatifity, 1(1), pp. 20–25. Available at: https://jurnal.stokbinaguna.ac.id/index.php/marga/article/view/2017 (Accessed: 7 September 2026).