Zuhra, D., Junaidi and Nofi Marlina Siregar (2022) “GROUNDSTROKE TRAINING MODEL BASED ON SITUATION GAME FOR FIELD TENNIS ATHLETES AGED 12-14 YEARS”, Gladi : Jurnal Ilmu Keolahragaan, 12(05), pp. 426–439. doi: 10.21009/GJIK.125.09.