Nur Septian Maulana, Hernawan, Taufik Rihatno. “The Effect of Hand Grip Strength, Wrist Flexibility, and Hand-Eye Coordination on Forehand Drive Skills”. Gladi : Jurnal Ilmu Keolahragaan, Vol. 14, no. 01, Mar. 2023, pp. 18 -28, https://journal.unj.ac.id/unj/index.php/gjik/article/view/22369.