Book History (Pennsylvania State University Press). Pennsylvania State University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBook History (Pennsylvania State University Press). Pennsylvania State University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBook History (Pennsylvania State University Press). Pennsylvania State University Press.
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