APA (7e ed.) Bronvermelding

Não informado. (1984). Year book of digestive diseases. Year Book Medical Publishers.

Chicago (17e ed.) Bronvermelding

Não informado. Year Book of Digestive Diseases. Chicago, Ill: Year Book Medical Publishers, 1984.

MLA (8e ed.) Bronvermelding

Não informado. Year Book of Digestive Diseases. Year Book Medical Publishers, 1984.

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