MISIASZEK, K. News of the Preventive System of St. Jan Bosko in Modern Education. Seminare. Learned Investigations, [S. l.], v. 14, p. 9–25, 1998. DOI: 10.21852/sem.1998.02. Disponível em: https://czasopisma.uksw.edu.pl/index.php/s/article/view/12823. Acesso em: 27 sep. 2024.