Gultom, Jeremia Radovan. “Pengaruh Latihan Menendang Sembilan Bola Ke Gawang Terhadap Kemampuan Shooting Atlet Ssb Duri Galaxy U12”. Jurnal Inovasi Olahraga, vol. 1, no. 01, Feb. 2022, pp. 42-47, https://jiojurnal.com/jio/article/view/64.