Urban, Renata. “Activities of Henryk Leliwa-Roycewicz in the Field of Military, Sports and Horse Riding Organizations in Poland”. Sport and Tourism Central European Journal 1, no. 2 (March 28, 2019): 27–48. Accessed March 28, 2024. https://czasopisma.ujd.edu.pl/index.php/sport/article/view/261.