WILLIAMS, D.; O’BRIEN, D.; KRAMERS, E. The Atlas of Canada Web Mapping: The User Counts. Cartographic Perspectives, [S. l.], n. 44, p. 8–28, 2003. DOI: 10.14714/CP44.512. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp44-williams-et-al. Acesso em: 28 apr. 2024.