FOWLER, E. Exploring Geographic Information Systems. Cartographic Perspectives, [S. l.], n. 28, p. 32–35, 1997. DOI: 10.14714/CP28.691. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp28-fowler. Acesso em: 3 may. 2024.