1. Bernstein V (2006) America’s history: Land of liberty. Steck-Vaughn, Austin, TX
2. Billings H (2003) History of our world, people, places, and ideas. Steck-Vaughn, Orlando, FL
3. Brophy J (2004) Motivating students to learn. Lawrence Erlbaum Associates, Publishers, Mahwah, NJ
4. Atlas BB (2005) Indianapolis. NYSTROM, IN
5. Churchill W (1997) A little matter of genocide: holocaust and denial in the Americas 1942 to the present. City Lights Books, San Francisco, CA