Rule, J. B. (1978). Insight and social betterment: A preface to applied social science. Oxford University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRule, James B. Insight and Social Betterment: A Preface to Applied Social Science. Oxford University Press, 1978.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRule, James B. Insight and Social Betterment: A Preface to Applied Social Science. Oxford University Press, 1978.
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