NIEWĘGŁOWSKI, Jan. The development of the Salesians in the years 1875-1888. Seminare. Studies in Youth and Society, [S. l.], v. 32, p. 165–177, 2023. DOI: 10.21852/sem.2012.32.13. Disponível em: https://czasopisma.uksw.edu.pl/s/article/view/11289. Acesso em: 11 nov. 2026.