“Effectiveness of a Superset-Based Physical Fitness Learning Program in Improving Muscular Strength among Male Adolescents in a Nonformal Learning Environment”, Tekno-Pedagogi. Jur. Tek. Pend, vol. 16, no. 2, pp. 140–150, Apr. 2026, Accessed: Oct. 03, 2026. Available: https://online-journal.unja.ac.id/pedagogi/article/view/50101