Jacoby, G. W. (1914). Child training as an exact science: A treatise based upon the principles of modern philosophy, normal and abnormal. Funk & Wagnalls.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJacoby, George W. Child Training as an Exact Science: A Treatise Based upon the Principles of Modern Philosophy, Normal and Abnormal. New York [u.a.]: Funk & Wagnalls, 1914.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJacoby, George W. Child Training as an Exact Science: A Treatise Based upon the Principles of Modern Philosophy, Normal and Abnormal. Funk & Wagnalls, 1914.
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