JAZDON, Artur; JAZDON, Krystyna. Pedagog – a forgotten publishing initiative of Kazimierz Szulc. Biblioteka, [S. l.], n. 18(27), p. 209–218, 2014. DOI: 10.14746/b.2014.18.9. Disponível em: https://pressto.amu.edu.pl/index.php/b/article/view/530. Acesso em: 19 oct. 2024.