POORTHUIS, A.; VAN DER ZEE, L.; GUO, G.; KEONG, J. H.; DY, B. Florence: a Web-based Grammar of Graphics for Making Maps and Learning Cartography. Cartographic Perspectives, [S. l.], n. 96, p. 32–50, 2020. DOI: 10.14714/CP96.1645. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/1645. Acesso em: 29 mar. 2024.