“The Effect of Bounce Ball Drill Training on the Bottom Passing Skills of Volleyball Players Aged 10-12 Years in ASVOBA (Assalam Voli Ball)”. 2025. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga 17 (2): 801-10. https://competitor.idjournal.eu/index.php/competitor/article/view/70.