Permadi, Asep Angga, Herman Subarjah, Dikdik Zafar Sidik, and Nuryadi Nuryadi. “The Influence of Psychological (Mental) Training to Improve the Performance of Football”. JUARA : Jurnal Olahraga 6, no. 2 (April 14, 2021): 162-170. Accessed September 17, 2025. https://jurnal.umkuningan.ac.id/index.php/juara/article/view/1192.