Aritonang Oppu Sunggu, Gidion, and Liliana Puspa Sari. 2024. “Physical Fitness Level of Junior High School Football Club Students of Medan Amal Bakti Foundation Age Group 13 -14 Years”. Journal of Football Research 1 (1), 1-5. https://doi.org/10.55081/jofr.v1i1.1993.