Creswell, J. W. (2016). 30 Essential Skills for the Qualitative Researcher. SAGE Publications, Inc.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCreswell, John W. 30 Essential Skills for the Qualitative Researcher. California: SAGE Publications, Inc, 2016.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCreswell, John W. 30 Essential Skills for the Qualitative Researcher. SAGE Publications, Inc, 2016.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.