APA引文

Elwood, P. C. (1991). Milk, butter, and heart disease.

Citação norma Chicago

Elwood, P C. Milk, Butter, and Heart Disease. 1991.

MLA引文

Elwood, P C. Milk, Butter, and Heart Disease. 1991.

警告：這些引文格式不一定是100％准確.