Tlustý, Tomáš. “A Brief Comparison of Physical Education and Sport Within the Czechoslovak and Polish YMCA in the Interwar Years”. Sport and Tourism Central European Journal 16, no. 3 (April 2, 2019): 29–45. Accessed July 25, 2024. https://czasopisma.ujd.edu.pl/index.php/sport/article/view/317.