ANDREWS, S. K.; BARUTH, C. PC-Globe+ and Electromap. Cartographic Perspectives, [S. l.], n. 02, p. 14–15, 1989. DOI: 10.14714/CP02.1167. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp02-andrews-baruth. Acesso em: 28 apr. 2024.