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Creswell, John W, Creswell, J. David. (2014). Research Design Qualitative, Quantitative, and Mixed Methods Approaches (Fifth Edition). Los Angeles: Sage Publication.

Gaya Chicago

Creswell, John W, Creswell, J. David. Research Design Qualitative, Quantitative, and Mixed Methods Approaches. Fifth Edition Los Angeles: Sage Publication, 2014. Text.

Gaya MLA

Creswell, John W, Creswell, J. David. Research Design Qualitative, Quantitative, and Mixed Methods Approaches. Fifth Edition Los Angeles: Sage Publication, 2014. Text.

Gaya Turabian

Creswell, John W, Creswell, J. David. Research Design Qualitative, Quantitative, and Mixed Methods Approaches. Fifth Edition Los Angeles: Sage Publication, 2014. Print.