Gale, G. (1979). Theory of Science: An introduction to history, logic, and philosophy of science. McGraw-Hill Book Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGale, George. Theory of Science: An Introduction to History, Logic, and Philosophy of Science. McGraw-Hill Book Company, 1979.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGale, George. Theory of Science: An Introduction to History, Logic, and Philosophy of Science. McGraw-Hill Book Company, 1979.
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