Peterson, Michael, Konal J. Dobson, Kevin Fandry, and William Shrader. “Techniques in Google Earth and Google Maps”. Cartographic Perspectives, no. 72 (June 1, 2012): 75–90. Accessed November 26, 2024. https://cartographicperspectives.org/index.php/journal/article/view/cp72-peterson-et-al.