APA aipamena

JOHN W CRESWELL. (2014). Research design: Qualitative, quantitative and mixed methods approaches. SAGE.

Chicago Style aipamena

JOHN W CRESWELL. Research Design: Qualitative, Quantitative and Mixed Methods Approaches. New Delhi: SAGE, 2014.

MLA aipamena

JOHN W CRESWELL. Research Design: Qualitative, Quantitative and Mixed Methods Approaches. SAGE, 2014.

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