CHU, G.; BUTTENFIELD, B. From the Guest Editors. Cartographic Perspectives, [S. l.], n. 27, p. 1–2, 1997. DOI: 10.14714/CP27.696. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp27-chu-buttenfield. Acesso em: 7 may. 2024.