Dyfyniad APA

Creswell, J. W. Educational research: Planning, conducting, and evaluating quantitative and qualitative.

Dyfyniad Arddull Chicago

Creswell, J. W. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative.

Dyfyniad MLA

Creswell, J. W. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.