Sugiarto , Aas, Supriyanto Supriyanto, and Mesterjon Mesterjon. “The Relationship Of Waist Flexibility Towards Smash Skills In Volley Ball Extracurricular Athletes In Sma N 13 Bengkulu Utara”. Sinar Sport Journal 1, no. 1 (June 29, 2021): 1–3. Accessed May 4, 2025. https://penerbitadm.pubmedia.id/index.php/SSJ/article/view/66.