Não informado. (1966). Gastroenterology abstracts and citations. National Institute of Arthritis, Metabolism and Digestive Diseases.
Citação do estilo Chicago (17ª ed.)Não informado. Gastroenterology Abstracts and Citations. Bethesda, Md: National Institute of Arthritis, Metabolism and Digestive Diseases, 1966.
Citação MLA (8ª ed.)Não informado. Gastroenterology Abstracts and Citations. National Institute of Arthritis, Metabolism and Digestive Diseases, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.