Barnard, B. (2005). Outbreak: Plagues that changed history. Crown Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarnard, Bryn. Outbreak: Plagues That Changed History. New York: Crown Publishers, 2005.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBarnard, Bryn. Outbreak: Plagues That Changed History. Crown Publishers, 2005.
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