Rajab, Abd, Fahrizal Fahrizal, Ilham Kamaruddin, Ahmad Adil, and Muh. Adnan Hudain. “Influence of Arm Muscle Strength and Concentration on Badminton Long Service Ability in Elementary Schools”. ETDC: Indonesian Journal of Research and Educational Review 4, no. 2 (March 27, 2025): 349–361. Accessed July 30, 2025. https://etdci.org/journal/ijrer/article/view/2949.