HAVRYLYSHYN, Petro; OSTANEK, Adam. Bohdan Hawrylyshyn and the Club of Rome. Echa Przeszłości, [S. l.], n. XXVI/1, p. 163–173, 2025. DOI: 10.31648/ep.11734. Disponível em: https://czasopisma.uwm.edu.pl/index.php/ep/article/view/11734. Acesso em: 15 lis. 2026.