Creswell, J. W. Educational research: Planning, conducting, and evaluating quantitative and qualitative.
Chicago-Zitierstil (17. Ausg.)Creswell, J. W. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative.
MLA-Zitierstil (8. Ausg.)Creswell, J. W. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.