Estes, T. H., Mintz, S. L., & Gunter, M. A. (2011). Instruction: A models approach (6th ed.). Pearson.
Lua i Stíl Chicago (17ú heag.)Estes, Thomas H., Susan L. Mintz, agus Mary Alice Gunter. Instruction: A Models Approach. 6th ed. Boston: Pearson, 2011.
Lua MLA (9ú heag.)Estes, Thomas H., et al. Instruction: A Models Approach. 6th ed. Pearson, 2011.
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