Ulick, R. (1961). The education of nations: A comparison in historical perspective. Harvard University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUlick, Robert. The Education of Nations: A Comparison in Historical Perspective. Cambridge, Mass: Harvard University Press, 1961.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUlick, Robert. The Education of Nations: A Comparison in Historical Perspective. Harvard University Press, 1961.
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