Lejzerowicz-Zajączkowska, Barbara, and Przemysław Hajduk. “Physical Activity of Older People As Education and Intervention Activity”. Sport and Tourism Central European Journal 16, no. 4 (April 1, 2019): 109–121. Accessed November 21, 2024. https://czasopisma.ujd.edu.pl/index.php/sport/article/view/312.