Wisnu Nugroho, et al. “Achievement Motivation in Junior Tennis Education: Evidence for Developing Athlete-Centered Coaching Practices”. Jurnal Yudistira : Publikasi Riset Ilmu Pendidikan Dan Bahasa, vol. 4, no. 4, Oct. 2026, pp. 10-23, doi:10.61132/yudistira.v4i4.3018.