APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (8:e uppl.)

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

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