Heller, W. W. (1966). New dimensions of political economy. Harvard University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHeller, Walter W. New Dimensions of Political Economy. Cambridge: Harvard University Press, 1966.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHeller, Walter W. New Dimensions of Political Economy. Harvard University Press, 1966.
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