"World Studies: Latin America: Geography - History - Culture" ‏(2007)* Johansen, Bruce E. "The Native Peoples of North America: A History" ‏(2006)* Keen, Benjamin, and Keith Haynes.
"World Studies: Latin America: Geography - History - Culture" (2007)* Bruce E. Johansen, "The Native Peoples of North America: A History" (2006)* Keen, Benjamin, and Keith Haynes.