APA引文

Cunningham, W. P. (2006). Principles of environmental science: Inquiry and applications. Boston: McGraw-Hill.

Trích dẫn kiểu Chicago

Cunningham, William P. Principles of Environmental Science: Inquiry and Applications. Boston: McGraw-Hill, 2006.

MLA引文

Cunningham, William P. Principles of Environmental Science: Inquiry and Applications. Boston: McGraw-Hill, 2006.

警告：这些引文格式不一定是100％准确.