KELLER, P. Designing Better Maps: A Guide for GIS Users; Making Maps: A Visual Guide to Map Design for GIS. Cartographic Perspectives, [S. l.], n. 57, p. 56–57, 2007. DOI: 10.14714/CP57.281. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp57-keller. Acesso em: 29 mar. 2024.