Bartz Petchenik, Barbara (April 1979). "From Place to Space: The Psychological Achievement of Thematic Mapping". Cartography and Geographic Information Science. 6 (1): 5–12. doi:10.1559/152304079784022763.
MacEachren, Alan M.; Ganter, John H. (Summer 1990). "A Pattern Identification Approach to Cartographic Visualization". Cartographica. 27 (2): 64–81. doi:10.3138/M226-1337-2387-3007.
Brewer, Cynthia. A.; Pickle, L. (2002). "Evaluation of methods for classifying epidemiological data on choropleth maps in series". Annals of the Association of American Geographers. 92 (4): 662–681. doi:10.1111/1467-8306.00310.
Piantados, Steven; Byar, David P.; Green, Sylvan B. (1988). "The Ecological Fallacy". American Journal of Epidemiology. 127 (5). Retrieved 27 December 2022.
Nelson, J. (2020). Multivariate Mapping. The Geographic Information Science & Technology Body of Knowledge (1st Quarter 2020 Edition), John P. Wilson (ed.). DOI: 10.22224/gistbok/2020.1.5