“Development of a Volleyball Spike Accuracy Training Model for Young Athletes at Tulung Selapan Club”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga 17, no. 3 (October 31, 2025): 2920–2928. Accessed December 7, 2025. http://competitor.ojsunm.ac.id/index.php/competitor/article/view/415.