1. Pritzker BM: The Great Plains. In: A Native American Encyclopedia. History, Culture and Peoples. New York: Oxford University Press, Inc., 2000
2. LeBeau S: Tribal history. Wakpa Waste Oyanke (The Good River Reservation). Cheyenne River Sioux Tribe historical information. http://www.sioux.org/historical.html. Accessed August 14, 2002
3. The Pine Ridge Reservation Project. Demographics, geography and reality. http.//www.pineridgerez.net/overview.php. Accessed July 23, 2002
4. A strategy for reducing tuberculosis among Ogala Sioux Native Americans;Breault;Am J Preventive Med,1997
5. The prevalence of diabetic retinopathy and associated risk factors among Sioux Indians;Berinstein;Diabetes Care,1997