Mansfield, E. (1968). Industrial research and technological innovation: An econometric analysis ([1st ed.].). Norton.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMansfield, Edwin. Industrial Research and Technological Innovation: An Econometric Analysis. [1st ed.]. New York: Norton, 1968.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMansfield, Edwin. Industrial Research and Technological Innovation: An Econometric Analysis. [1st ed.]. Norton, 1968.
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