NIEWĘGŁOWSKI , Jan Piotr. Oratorian Operations of the Salesian Order in the Interwar Period. Seminare. Studies in Youth and Society, [S. l.], v. 41, n. 2, p. 85–97, 2022. DOI: 10.21852/sem.2020.2.06. Disponível em: https://czasopisma.uksw.edu.pl/s/article/view/10224. Acesso em: 10 nov. 2026.