Irawan, Dwi. “Efektivitas Three Finger Grip Dengan Four Finger Grip Terhadap Akurasi Sidehand Throw Posisi Infield Olahraga Softball ”. Journal of Physical Activity and Sports (JPAS) 1, no. 1 (December 31, 2020): 32-38. Accessed September 15, 2025. https://mahardhika.or.id/jurnal/index.php/jpas/article/view/8.