APA引文

WILLIAM P CUNNINGHAM. (2001). Environmental science. Boston, MA: McGraw-Hill.

Trích dẫn kiểu Chicago

WILLIAM P CUNNINGHAM. Environmental Science. Boston, MA: McGraw-Hill, 2001.

MLA引文

WILLIAM P CUNNINGHAM. Environmental Science. Boston, MA: McGraw-Hill, 2001.

警告：这些引文格式不一定是100％准确.