HELLWIG, Jan. Paedagogica Historica. International Journal of the History of Education. XXXII, 1996, 3. Biuletyn Historii Wychowania, [S. l.], n. 5/6, p. 93, 1997. DOI: 10.14746/bhw.1997.5.6.29. Disponível em: https://pressto.amu.edu.pl/index.php/bhw/article/view/16817. Acesso em: 4 mar. 2024.