Kluz, Marek. “The Movement of Pure Hearts As the Symbol and the Road of Maturing for Pure Love”. Kwartalnik Naukowy Fides et Ratio 49, no. 1 (March 23, 2022): 21–30. Accessed January 28, 2026. https://fidesetratio.com.pl/ojs/index.php/FetR/article/view/1032.