WINGERT, E. A. John Clinton Sherman Academic Cartographer on the Brink of a New Age. Cartographic Perspectives, [S. l.], n. 27, p. 14–19, 1997. DOI: 10.14714/CP27.700. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp27-wingert. Acesso em: 4 may. 2024.