BREWER, C. A. Cartography: thematic map design, 3rd edition. Cartographic Perspectives, [S. l.], n. 17, p. 26–27, 1994. DOI: 10.14714/CP17.947. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp17-brewer. Acesso em: 28 may. 2026.