Creswell, J. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research, Global Edition (6.). Pearson Education Limited.
Chicago-referens (17:e uppl.)Creswell, John. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research, Global Edition. 6. Pearson Education Limited.
MLA-referens (8:e uppl.)Creswell, John. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research, Global Edition. 6. Pearson Education Limited.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.