“The Effect of Bounce Ball Drill Training on the Bottom Passing Skills of Volleyball Players Aged 10-12 Years in ASVOBA (Assalam Voli Ball)”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga 17, no. 2 (July 15, 2025): 801–810. Accessed July 18, 2025. https://competitor.idjournal.eu/index.php/competitor/article/view/70.