Tomczyk, Jacek, and Anna Dygudaj. “Specificity of Human Nature - Vampirism”. Studia Ecologiae et Bioethicae 6, no. 1 (December 31, 2008): 77–91. Accessed March 30, 2025. https://czasopisma.uksw.edu.pl/index.php/seb/article/view/7387.