Axtell. The Educational Legacy of Woodrow Wilson. University of Virginia Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAxtell. The Educational Legacy of Woodrow Wilson. University of Virginia Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAxtell. The Educational Legacy of Woodrow Wilson. University of Virginia Press.
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