DIBIASE, D.; KRYGIER, J. Multimedia at Penn State. Cartographic Perspectives, [S. l.], n. 19, p. 40–41, 1994. DOI: 10.14714/CP19.915. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp19-dibiase-krygier. Acesso em: 28 apr. 2024.