Edwards, B. (1972). Sources of economic and business statistics. Heinemann.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEdwards, Bernard. Sources of Economic and Business Statistics. London: Heinemann, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEdwards, Bernard. Sources of Economic and Business Statistics. Heinemann, 1972.
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