Harman, A. (1971). International computer industry: Innovation and comparative advantage. Harvard University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarman, A.J. International Computer Industry: Innovation and Comparative Advantage. Harvard University Press, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHarman, A.J. International Computer Industry: Innovation and Comparative Advantage. Harvard University Press, 1971.
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