HELLWIG, Jan. Paedagogica Historica. New series. International Journal of the History of Education. Biuletyn Historii Wychowania, [S. l.], n. 1, p. 14, 1994. DOI: 10.14746/bhw.1994.1.5. Disponível em: https://pressto.amu.edu.pl/index.php/bhw/article/view/17169. Acesso em: 19 kwi. 2024.