5T. Mills Kelly, Teaching History in the Digital Age, p.30.
6Mizuko Ito, Hanging Out, Messing Around and Geeking Out, Cambridge: MIT Press, 2009, p.244.
7Samuel Wineburg, Historical Thinking and other Unnatural Acts: charting the Future of Teaching the Past, Philadelphia: Temple University Press, 2001, pp.242248.
8T. Mills Kelly, Teaching history in the digital age, p.17.
9Patti Ward, Elements of Historical Thinking, Washington, D. C: American Historical Association, 1971, pp.4-5.
10Richard A. Marius, A Short Guide to Writing about History, New York: HarperCollins College Publishers, 1989, pp.1-9.