International Academy of Proctology. (2004). American Journal of Proctology, Gastroenterology and Colon and Rectal Surgery. McMahon.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Academy of Proctology. American Journal of Proctology, Gastroenterology and Colon and Rectal Surgery. New York: McMahon, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रInternational Academy of Proctology. American Journal of Proctology, Gastroenterology and Colon and Rectal Surgery. McMahon, 2004.
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