Habbakkuk, H. (1967). American and British technology in the nineteenth century. Cambridge University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHabbakkuk, H.J. American and British Technology in the Nineteenth Century. Cambridge University Press, 1967.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHabbakkuk, H.J. American and British Technology in the Nineteenth Century. Cambridge University Press, 1967.
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