Muhamad Ilham, Nadya Dwi Oktafiranda, and Rizka Antoni. “Correlation Between Mental Skills and Anxiety During the Covid-19 Pandemic in University Volleyball Athletes ”. Gladi : Jurnal Ilmu Keolahragaan 13, no. 1 (March 31, 2022): 61–75. Accessed November 21, 2024. https://journal.unj.ac.id/unj/index.php/gjik/article/view/24367.