Ngatman N, Setyawan H, Gani I, Iswanto A, Kurniawan DD, Rizkyanto WI, et al. The influence of parents and coach’s roles on character building in 18 years junior tennis athlete. JK [Internet]. 2023 Sep. 30 [cited 2025 May 14];11(2):220-7. Available from: https://journal.uny.ac.id/index.php/jolahraga/article/view/63763