CitasBarr, Juliana. "Geographies of Power: Mapping Indian Borders in the 'Borderlands' of the Early Southwest." The William and Mary Quarterly 68, no. 1 January 2011: 5-46. https://www-jstor-org.proxy.library.upenn.edu/stable/10.5309/willmaryquar.68.1.0005#metadata_info_tab_contents.
Barr, Juliana. "Geographies of Power: Mapping Indian Borders in the 'Borderlands' of the Early Southwest." The William and Mary Quarterly 68, no. 1 January 2011: 5-46. https://www-jstor-org.proxy.library.upenn.edu/stable/10.5309/willmaryquar.68.1.0005#metadata_info_tab_contents.