APA ציטוט

 Creswell, J. W. (2019).  Educational research: Planning, conducting, and evaluating quantitative and qualitative research.  Pearson.

Trích dẫn kiểu Chicago

 Creswell, John W.  Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research.  Pearson, 2019.

ציטוט MLA

 Creswell, John W.  Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research.  Pearson, 2019.