Bernard, H. R. (2013). Social research method: Qualitative and quantitative approaches (2nd ed.). SAGE Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBernard, H. Russell. Social Research Method: Qualitative and Quantitative Approaches. 2nd ed. Los Angeles: SAGE Publications, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBernard, H. Russell. Social Research Method: Qualitative and Quantitative Approaches. 2nd ed. SAGE Publications, 2013.
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