HUFFMAN, D. P. The Power of Appearances. Cartographic Perspectives, [S. l.], n. 90, p. 71–81, 2018. DOI: 10.14714/CP90.1485. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp90-pcc. Acesso em: 29 jun. 2022.