PROBÁLD, Ferenc. Aktuelle Probleme des Geographieunterrichts in Ungarn. Journal of Geography Education, [S. l.], v. 13, n. 4, p. 182–187, 1985. DOI: 10.60511/zgd.v13i4.431. Disponível em: https://zgd-journal.de/index.php/zgd/article/view/431. Acesso em: 2 apr. 2026.