APA引文

Cunningham, W. P. (2002). Principles of environmental science: Inquiry and Applications. Boston, MA: McGraw-Hill.

Trích dẫn kiểu Chicago

Cunningham, William P. Principles of Environmental Science: Inquiry and Applications. Boston, MA: McGraw-Hill, 2002.

MLA引文

Cunningham, William P. Principles of Environmental Science: Inquiry and Applications. Boston, MA: McGraw-Hill, 2002.

警告：这些引文格式不一定是100％准确.