Sukiri, Sukiri, Rizky Nurulfa, Mustara Musa, Taufik Rahmadi, and Iwan Setiawan. “MENGUKUR PERCAYA DIRI, MOTIVASI BERPRESTASI ATLET ATLETIK REMAJA”. Jurnal Speed (Sport, Physical Education, Empowerment) 4, no. 01 (August 5, 2021): 64–68. Accessed November 19, 2024. https://journal.unsika.ac.id/speed/article/view/4901.