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