Szczepkowska, Weronika. “On the Sources of the Theory of Purposeful Causation in Consistent Thomism”. Studia Ecologiae et Bioethicae 6, no. 1 (December 31, 2008): 517–532. Accessed November 23, 2024. https://czasopisma.uksw.edu.pl/index.php/seb/article/view/7585.