HOFFMANN, Reinhard. Leitbilder für den Geographieunterricht: Bestand – Bedarf?. Journal of Geography Education, [S. l.], v. 28, n. 3, p. 120–130, 2000. DOI: 10.60511/zgd.v28i3.288. Disponível em: https://zgd-journal.de/index.php/zgd/article/view/288. Acesso em: 2 apr. 2026.