CRAMPTON, J. W. Online Mapping and Critical GIS. Cartographic Perspectives, [S. l.], n. 39, p. 46–47, 2001. DOI: 10.14714/CP39.639. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp39-crampton. Acesso em: 26 apr. 2024.