APA引文

Cunningham, W. P. (2008). Principles of environmental science: Inquiry & applications. New York: McGraw-Hill.

Trích dẫn kiểu Chicago

Cunningham, William P. Principles of Environmental Science: Inquiry & Applications. New York: McGraw-Hill, 2008.

MLA引文

Cunningham, William P. Principles of Environmental Science: Inquiry & Applications. New York: McGraw-Hill, 2008.

警告：這些引文格式不一定是100％准確.