raad, ayad, and Asmaa Hakmit. “Building a Motivation Scale for Young Volleyball Players Aged (17-19) Years”. Journal of Physical Education 35, no. 1 (March 28, 2023): 85–103. Accessed July 5, 2026. https://www.jcope.uobaghdad.edu.iq/index.php/jcope/article/view/1359.