Fortuna, Małgorzata, Gracjan Socha, Jacek Szczurowski, Jakub Zemełko, and Iwona Demczyszak. “Comparison of Anaerobic Efficiency Rating in Football Players Groups of Age Range 12 – 14 and 17 – 18 Years Based on Wingate Test”. Journal of Education, Health and Sport 8, no. 12 (December 14, 2018): 47–58. Accessed November 24, 2024. https://apcz.umk.pl/JEHS/article/view/6333.