Achilov , Abdulla. “ASSESSMENT STANDARDS OF GENERAL ENDURANCE IN THE ‘COOPER’ TEST FOR FOOTBALL PLAYERS OF DIFFERENT AGES”. International Bulletin of Engineering and Technology 2, no. 12 (December 20, 2022): 108–113. Accessed March 22, 2026. https://internationalbulletins.com/intjour/index.php/ibet/article/view/207.