American Historical Association. (2003). Benchmarks for professional development in teaching history as a discipline. Retrieved June20, 2002, from http://www.theaha.org/teaching/bench-marks.htm
2.
BursonG. (1989). A lack of vision: The Bradley Commission Report. The History Teacher, 23(1), 59–71.
3.
WigginsG., & McTighe,J. (1998). Understanding by design. New Jersey: Merrill Prentice Hall.