Tyler, M., & Spoolman, S. (2008). Environmental science: Problems, concepts, and solutions (12th ed.). Thomson.
Chicago-viite (17. p.)Tyler, Miller, ja Scott Spoolman. Environmental Science: Problems, Concepts, and Solutions. 12th ed. Australia: Thomson, 2008.
MLA-viite (9. p.)Tyler, Miller, ja Scott Spoolman. Environmental Science: Problems, Concepts, and Solutions. 12th ed. Thomson, 2008.
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