PATTON, J. C. Hats. Cartographic Perspectives, [S. l.], n. 09, p. 19, 1991. DOI: 10.14714/CP09.1071. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp09-patton. Acesso em: 2 may. 2024.