Sartono, Sartono. “Pengaruh Latihan Double Leg Speed Hop Dan Double Leg Box Boundterhadap Kecepatan Lari 100 Meter”. JUARA : Jurnal Olahraga 3, no. 1 (January 28, 2018): 42-50. Accessed July 3, 2024. https://jurnal.upmk.ac.id/index.php/juara/article/view/215.