Não informado. (2000). Transactions of the Philadelphia Academy of Surgery. Philadelphia Academy of Surgery.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Transactions of the Philadelphia Academy of Surgery. Philadelphia, Pa: Philadelphia Academy of Surgery, 2000.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Transactions of the Philadelphia Academy of Surgery. Philadelphia Academy of Surgery, 2000.
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