APA (7e ed.) Bronvermelding

Não informado. (1966). Gastroenterology abstracts and citations. National Institute of Arthritis, Metabolism and Digestive Diseases.

Chicago (17e ed.) Bronvermelding

Não informado. Gastroenterology Abstracts and Citations. Bethesda, Md: National Institute of Arthritis, Metabolism and Digestive Diseases, 1966.

MLA (8e ed.) Bronvermelding

Não informado. Gastroenterology Abstracts and Citations. National Institute of Arthritis, Metabolism and Digestive Diseases, 1966.

Let op: Deze citaties zijn niet altijd 100% accuraat.