CitasThomas, Cyrus, and JR Swanton. "Linguistic Map of Mexico and Central America." Map. 1909. Accessed April 23, 2022. https://lib.asu.edu/sites/default/files/images/1909_linguistic_map_of_mexico_and_central_america.jpg.
Thomas, Cyrus, and JR Swanton. "Linguistic Map of Mexico and Central America." Map. 1909. Accessed April 23, 2022. https://lib.asu.edu/sites/default/files/images/1909_linguistic_map_of_mexico_and_central_america.jpg.