Tumanggor, Robinhot, and Nurkadri Nurkadri. 2021. “A ESKALASI VARIASI LATIHAN KELINCAHAN SEPAK BOLA SSB DI KOTA BINJAI: Variasi Latihan Kelincahan Sepak Bola”. Jurnal Speed (Sport, Physical Education, Empowerment) 4 (01):56-63. https://journal.unsika.ac.id/index.php/speed/article/view/5363.