GÓMEZ, Alberto Luis. BOARDMAN, D. Handbook for Geography teachers. Documents d’Anàlisi Geogràfica, [S. l.], v. 12, n. 12, p. 254–256, 1988. DOI: 10.5565/rev/dag.1294. Disponível em: https://dag.revista.uab.cat/article/view/v12-gomez. Acesso em: 9 may. 2025.