Nugraha, Arjuna Arya, Moch. Yunus, and Prisca Widiawati. “Survey on Physical Fitness Levels of Athletes Aged 13-15 Years Old at Satria Mandiri Soccer School, Bojonegoro Regency”. Journal of Science and Education (JSE) 3, no. 2 (December 13, 2022): 113-121. Accessed April 17, 2024. https://jse.rezkimedia.org/index.php/jse/article/view/164.