Geiger. The History of American Higher Education. Princeton University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGeiger. The History of American Higher Education. Princeton University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGeiger. The History of American Higher Education. Princeton University Press.
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