Cunningham, W. P. (2010). Environmental science: A global concern. Boston: McGraw-Hill.
Trích dẫn kiểu ChicagoCunningham, William P. Environmental Science: A Global Concern. Boston: McGraw-Hill, 2010.
MLA引文Cunningham, William P. Environmental Science: A Global Concern. Boston: McGraw-Hill, 2010.
警告:这些引文格式不一定是100%准确.