Creswell, J. W. (2012). Educational research: Planning, conducting, and evaluating quantitative and qualitative research (4th ed.). Pearson.
Citazione stile Chigago Style (17a edizione)Creswell, John W. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research. 4th ed. Boston: Pearson, 2012.
Citatione MLA (9a ed.)Creswell, John W. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research. 4th ed. Pearson, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.