Creswell, J. W. (2014). Research design: Qualitative, Quantitative, and mixed methods approaches (4ª edición.). SAGE.
Tohutoru Kātū ChicagoCreswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 4ª edición. Thousand Oaks, CA: SAGE, 2014.
Tohutoro MLACreswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 4ª edición. SAGE, 2014.
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