SPICER, B. Maps.com: Solving the Base Map Problem Online. Cartographic Perspectives, [S. l.], n. 31, p. 46–49, 1998. DOI: 10.14714/CP31.653. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp31-spicer. Acesso em: 26 may. 2024.