OLSON, J. M. Adjusting and Separating Map Colors Using PhotoShopTM. Cartographic Perspectives, [S. l.], n. 25, p. 19–24, 1996. DOI: 10.14714/CP25.735. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp25-olson. Acesso em: 14 aug. 2024.