Não informado. (1994). Journal of the American College of Surgeons. American College of Surgeons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the American College of Surgeons. Chicago, Ill: American College of Surgeons, 1994.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the American College of Surgeons. American College of Surgeons, 1994.
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