Blake, R. M. (1989). Theories of scientific method: The Renaissance through the nineteenth century. Gordon and Breach.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBlake, Ralph M. Theories of Scientific Method: The Renaissance Through the Nineteenth Century. New York: Gordon and Breach, 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBlake, Ralph M. Theories of Scientific Method: The Renaissance Through the Nineteenth Century. Gordon and Breach, 1989.
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