VILLANUEVA I MARGALEF, Maria. GERBER, Rod i LIDSTONE, John. Developing skills in geographical education. Documents d’Anàlisi Geogràfica, [S. l.], v. 21, p. 211–213, 2006. Disponível em: https://dag.revista.uab.cat/article/view/1156. Acesso em: 10 jan. 2025.