Starościak, Wojciech, Halina Guła-Kubiszewska, Małgorzata Kałwa, and Urszula Dębska. “Physical Activity of Students in the Era of Globalization”. Journal of Education, Health and Sport 6, no. 13 (December 31, 2016): 96–114. Accessed April 26, 2024. https://apcz.umk.pl/JEHS/article/view/4154.