SHAWA, T. W. Digital Map and Geospatial Information Center Princeton University Library. Cartographic Perspectives, [S. l.], n. 41, p. 61–63, 2002. DOI: 10.14714/CP41.567. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp41-shawa. Acesso em: 25 apr. 2024.