APA引文

Hadfield, E. H. (1950). Oesophageal Foreign Body Precipitating Dissecting Aortic Aneurysm.

Citação norma Chicago

Hadfield, E. H. Oesophageal Foreign Body Precipitating Dissecting Aortic Aneurysm. 1950.

MLA引文

Hadfield, E. H. Oesophageal Foreign Body Precipitating Dissecting Aortic Aneurysm. 1950.

警告：這些引文格式不一定是100％准確.