Kalinowska, Wioleta, Marek Napierała, and Rafał Gotowski. “Physical Activity Leisure Time Students from Secondary School Ignacy Dzialynski in Golub-Dobrzyn”. Journal of Education, Health and Sport 7, no. 2 (February 2, 2017): 135–150. Accessed July 27, 2024. https://apcz.umk.pl/JEHS/article/view/4249.