VERHETSEL, Ann. Geographiedidaktische Forschung in Belgien: Am Rande des Interesses. Journal of Geography Education, [S. l.], v. 15, n. 1, p. 31–39, 1987. DOI: 10.60511/zgd.v15i1.427. Disponível em: https://zgd-journal.de/index.php/zgd/article/view/427. Acesso em: 2 apr. 2026.