Podgórski, Ryszard. “PHILOSOPHICAL POSITIVISTIC THOUGHT OF BARBARA SKARGA AGAINST THE BACKGROUND OF EUROPEAN HUMANITIES”. Scientific Journal of Polonia University 22, no. 3 (February 1, 2017): 11-22. Accessed May 3, 2024. http://pnap.ap.edu.pl/index.php/pnap/article/view/145.