BABBIE, E. (1986). The Practice of Social Research. Wadsworth Publishing Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBABBIE, Earl. The Practice of Social Research. Wadsworth Publishing Company, 1986.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBABBIE, Earl. The Practice of Social Research. Wadsworth Publishing Company, 1986.
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