Gray, D. E. (2014). Doing research in the real world (Third edition.). SAGE.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGray, David Edward. Doing Research in the Real World. Third edition. Los Angeles, California: SAGE, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGray, David Edward. Doing Research in the Real World. Third edition. SAGE, 2014.
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