ARDAHAN, F., Y. AKDENIZ, and B. M. AKGUL. “Development of the Scale of Factors That Motivate Individuals to Play Tennis As a Serious Leisure Activity and Conducting Its Validity and Reliability Study”. International Journal of Holistic Health, Sports and Recreation, vol. 3, no. 2, Dec. 2024, pp. 133-48, doi:10.5281/zenodo.14567715.