Dio Alif Airlangga Daulay, Iman Sulaiman, and Fatah Nurdin. “GAME-BASED BACKHAND TENNIS TECHNIQUE LEARNING MODEL TO IMPROVE LEARNING OUTCOMES”. Gladi : Jurnal Ilmu Keolahragaan 12, no. 04 (September 30, 2021): 269 - 280. Accessed December 13, 2025. http://103.8.12.212:33180/unj/index.php/gjik/article/view/22143.