Drake, F. D., & Nelson, L. R. (2009). Engagement in teaching history: Theory and practices for middle and secondary teachers (2nd ed.). Merrill.
Lua i Stíl Chicago (17ú heag.)Drake, Frederick D., agus Lynn R. Nelson. Engagement in Teaching History: Theory and Practices for Middle and Secondary Teachers. 2nd ed. Upper Saddle River, New Jersey: Merrill, 2009.
Lua MLA (9ú heag.)Drake, Frederick D., agus Lynn R. Nelson. Engagement in Teaching History: Theory and Practices for Middle and Secondary Teachers. 2nd ed. Merrill, 2009.
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