Cunningham, W. P. (2012). Environmental science: A global concern. New York: McGraw-Hill.
Trích dẫn kiểu ChicagoCunningham, William P. Environmental Science: A Global Concern. New York: McGraw-Hill, 2012.
MLA引文Cunningham, William P. Environmental Science: A Global Concern. New York: McGraw-Hill, 2012.
警告：這些引文格式不一定是100％准確.