COPE, A.; BURNHAM, S. The American Geographical Society Library at UW-Milwaukee. Cartographic Perspectives, [S. l.], n. 62, p. 48–51, 2009. DOI: 10.14714/CP62.188. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp62-cope-burnham. Acesso em: 28 mar. 2024.