1.
The Effectiveness of Mental Toughness Training Ad – Menstren Model in Badminton Sports for Students of SMP Negeri 2 Jambi City. Compet. J. Pendidik. Kepelatihan Olahraga. 2025;17(3):2677-2683. Accessed March 19, 2026. https://competitor.idjournal.eu/index.php/competitor/article/view/378