Botkin, D. B., & Keller, E. A. (2000). Environmental science: Earth as a living planet (3rd ed.). New York: J. Wiley.
Trích dẫn kiểu ChicagoBotkin, Daniel B., và Edward A. Keller. Environmental Science: Earth As a Living Planet. 3rd ed. New York: J. Wiley, 2000.
Deismireacht MLABotkin, Daniel B., và Edward A. Keller. Environmental Science: Earth As a Living Planet. 3rd ed. New York: J. Wiley, 2000.
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