“Development of A Smash Drill Training Model To Improve Smash Accuracy In Extracurricular Volleyball Students In High School Vocational School”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga 17, no. 2 (August 6, 2025): 1414–1422. Accessed February 1, 2026. https://competitor.idjournal.eu/index.php/competitor/article/view/127.