Botkin, D. B. (1998). Environmental science: Earth as a living planet. John Wiley & Sons.
Chicago-viite (17. p.)Botkin, Daniel B. Environmental Science: Earth as a Living Planet. New York: John Wiley & Sons, 1998.
MLA-viite (9. p.)Botkin, Daniel B. Environmental Science: Earth as a Living Planet. John Wiley & Sons, 1998.
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