“Survey of the Development of Physical Condition And Football Skills Of The U-13 Wayer Men’s Team Sorong Selatan District”. JURNAL MUARA OLAHRAGA 7, no. 1 (January 9, 2025): 261–271. Accessed April 24, 2026. https://ejournal.ummuba.ac.id/index.php/pjkr/article/view/2634.