APA引文

Cunningham, W. P. (2004). Principle of environmental science: Inquiry and applications. New York, NY: McGraw-Hill.

Trích dẫn kiểu Chicago

Cunningham, William P. Principle of Environmental Science: Inquiry and Applications. New York, NY: McGraw-Hill, 2004.

MLA引文

Cunningham, William P. Principle of Environmental Science: Inquiry and Applications. New York, NY: McGraw-Hill, 2004.

警告：這些引文格式不一定是100％准確.