Ginting, R. A. G., A. A. Munawar, and D. M. Sary. “The Level of Knowledge of Futsal Extracurricular Students at SMP Negeri 5 Binjai Toward Futsal Sports Facilities”. Educational Sciences Journal, Vol. 2, no. 2, Oct. 2025, pp. 45-50, doi:10.55081/esj.v2i2.4960.