Soyal, M., M. Kaya, and N.M. Çelik. “Examining the Relationship Between Joint Range of Motion and Serve Speed and Hit”. Physical education of students 23, no. 3 (May 24, 2019): 142-146. Accessed December 5, 2021. https://sportedu.org.ua/index.php/PES/article/view/837.