Não informado. (1934). American Journal of Digestive Diseases and Nutrition. American Gastro-Enterological Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. American Journal of Digestive Diseases and Nutrition. Fort Wayne, Ind: American Gastro-Enterological Association, 1934.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. American Journal of Digestive Diseases and Nutrition. American Gastro-Enterological Association, 1934.
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