Jurek, Tomasz, and Marek Kruk. “The Conditions for Development of School Sports in Poland After the Second World War (1945–1953)”. Sport and Tourism Central European Journal 16, no. 1 (April 4, 2019): 75–89. Accessed April 19, 2024. https://czasopisma.ujd.edu.pl/index.php/sport/article/view/342.