APA aipamena

Creswell, J. W. (2014). Research design: Qualitative, Quantitative, and mixed methods approaches (4ª edición.). SAGE.

Chicago Style aipamena

Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 4ª edición. Thousand Oaks, CA: SAGE, 2014.

MLA aipamena

Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 4ª edición. SAGE, 2014.