APA引文

Corcoran, R., & Howard, R. (1976). Letter: Oestrogens as a cause of endometrial carcinoma.

Citação norma Chicago

Corcoran, R., and R. Howard. Letter: Oestrogens As a Cause of Endometrial Carcinoma. 1976.

MLA引文

Corcoran, R., and R. Howard. Letter: Oestrogens As a Cause of Endometrial Carcinoma. 1976.

警告：這些引文格式不一定是100％准確.