Alim, Abdul. “HUBUNGAN MOTIVASI, ATTITUDE, ANXIETY DAN SELF EFFICACY TERHADAP PRESTASI ATLET TENIS LAPANGAN LEVEL JUNIOR DAN SENIOR”. MEDIKORA 17, no. 2 (December 30, 2019): 83–90. Accessed May 15, 2025. https://jurnal.uny.ac.id/index.php/medikora/article/view/29179.