Gastroenterology Research Group. (1979). Digestive Diseases and Sciences. Plenum Press.
Citação do estilo Chicago (17ª ed.)Gastroenterology Research Group. Digestive Diseases and Sciences. New York: Plenum Press, 1979.
Citação MLA (8ª ed.)Gastroenterology Research Group. Digestive Diseases and Sciences. Plenum Press, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.