APA引文

Burbige, E. J. (1977). Crohn's disease of the stomach.

Citação norma Chicago

Burbige, E J. Crohn's Disease of the Stomach. 1977.

MLA引文

Burbige, E J. Crohn's Disease of the Stomach. 1977.

警告：這些引文格式不一定是100％准確.