Cunningham, W. P., Cunningham, M. A., & Saigo, B. W. (2005). Environmental science: A global concern (8th ed.). New York: McGraw-Hill.
Trích dẫn kiểu ChicagoCunningham, William P., Mary Ann Cunningham, và Barbara Woodworth Saigo. Environmental Science: A Global Concern. 8th ed. New York: McGraw-Hill, 2005.
Deismireacht MLACunningham, William P., Mary Ann Cunningham, và Barbara Woodworth Saigo. Environmental Science: A Global Concern. 8th ed. New York: McGraw-Hill, 2005.
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