SACK, C. M. The Status of Web Mapping in North American Higher Education. Cartographic Perspectives, [S. l.], n. 89, p. 25–43, 2018. DOI: 10.14714/CP89.1429. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp89-pr2. Acesso em: 25 may. 2022.