WILLIAMS, Michael. Research in Geographical Education: Retrospect and Prospect. Journal of Geography Education, [S. l.], v. 26, n. 3, p. 124–135, 1998. DOI: 10.60511/zgd.v26i3.307. Disponível em: https://zgd-journal.de/index.php/zgd/article/view/307. Acesso em: 2 apr. 2026.