HELLWIG, Jan. Yitae Scholasticae. The Yournal of Educational Biography, Tom 17, 1998, nr 2. Biuletyn Historii Wychowania, [S. l.], n. 9/10, p. 65–66, 1999. DOI: 10.14746/bhw.1999.9.10.22. Disponível em: https://pressto.amu.edu.pl/index.php/bhw/article/view/16992. Acesso em: 19 kwi. 2024.