Hulten, C. R. (1996). Quality change in capital goods and its impact on economic growth. National Bureau of Economic Research.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHulten, Charles R. Quality Change in Capital Goods and Its Impact on Economic Growth. Cambridge: National Bureau of Economic Research, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHulten, Charles R. Quality Change in Capital Goods and Its Impact on Economic Growth. National Bureau of Economic Research, 1996.
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