Horn, R. V. (1993). Statistical indicators for the economic and social sciences. The University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHorn, Robert V. Statistical Indicators for the Economic and Social Sciences. The University Press, 1993.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHorn, Robert V. Statistical Indicators for the Economic and Social Sciences. The University Press, 1993.
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