Merkoša sitáhtat
APA-čujuhus (7. p.)
Tyler, M., & Spoolman, S. (2008). Environmental science: Problems, concepts, and solutions (12th ed.). Thomson.
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Chicago-čujuhus (17. p.)
Tyler, Miller, juo Scott Spoolman. Environmental Science: Problems, Concepts, and Solutions. 12th ed. Australia: Thomson, 2008.
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MLA-čujuhus (9. p.)
Tyler, Miller, juo Scott Spoolman. Environmental Science: Problems, Concepts, and Solutions. 12th ed. Thomson, 2008.
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