Czekalski, Rafał. “How Can We Express Our Concern for the Future of Our Planet?”. Studia Ecologiae et Bioethicae 13, no. 1 (March 31, 2015): 61–78. Accessed May 21, 2024. https://czasopisma.uksw.edu.pl/index.php/seb/article/view/6650.