Artanayasa, I Wayan, I Made Satyawan, Ketut Chandra Adinata Kusuma, and I Putu Agus Dharma Hita. “Validity Test of a Mobile Learning-Based Circuit Training Model for Football Players”. SPORT TK-EuroAmerican Journal of Sport Sciences 14 (August 8, 2025): 72. Accessed September 12, 2026. https://revistas.um.es/sportk/article/view/649581.