Creswell, J. W., & Creswell, J. D. Research design: Qualitative, quantitative, and mixed methods approaches (6th ed.). SAGE Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCreswell, John W., और J. David Creswell. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 6th ed. Los Angeles: SAGE Publications.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCreswell, John W., और J. David Creswell. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 6th ed. SAGE Publications.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.