Gastroenterology Research Group. (1979). Digestive Diseases and Sciences. Plenum Press.
Čikaški stil citiranja (17. izdanje)Gastroenterology Research Group. Digestive Diseases and Sciences. New York: Plenum Press, 1979.
MLA način citiranja (8. izdanje)Gastroenterology Research Group. Digestive Diseases and Sciences. Plenum Press, 1979.
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