D. . Harpinus, A. R. . Nurhidayat, A. . Putra, and R. . Gunawan, “the Physical Condition Study of Football Players at SMP Negeri 20 Kerinci: Physical Condition Study of Football Players at SMP Negeri 20 Kerinci”, Joecy Journal, vol. 5, no. 2, pp. 10650–10656, Jul. 2025.