Creswell, J. W. (2012). Educational research: Planning, conducting, and evaluating quantitative and qualitative research (4th ed.). Pearson.
Citace podle Chicago (17th ed.)Creswell, John W. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research. 4th ed. Boston, Mass: Pearson, 2012.
Citace podle MLA (9th ed.)Creswell, John W. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research. 4th ed. Pearson, 2012.
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