APA引文

Foege, W. H., Millar, J. D., & Henderson, D. A. (1998). Smallpox eradication in West and Central Africa.

Citação norma Chicago

Foege, William H., J. D. Millar, and D. A. Henderson. Smallpox Eradication in West and Central Africa. 1998.

MLA引文

Foege, William H., J. D. Millar, and D. A. Henderson. Smallpox Eradication in West and Central Africa. 1998.

警告：這些引文格式不一定是100％准確.