Urniaż, Jerzy. “Enlightenment and Reform of The National Education Commission, Its Pioneering System of Centralized Management, the School Program and Physical Education: Myths and Reality”. Sport and Tourism Central European Journal 3, no. 1 (March 24, 2020): 11–27. Accessed April 20, 2024. https://czasopisma.ujd.edu.pl/index.php/sport/article/view/885.