Cunningham, W. P. (2008). Principles of Environmental Science: Inquiry and Applications (4th ed.). McGraw-Hill Higher Education.
Citace podle Chicago (17th ed.)Cunningham, William P. Principles of Environmental Science: Inquiry and Applications. 4th ed. New York: McGraw-Hill Higher Education, 2008.
Citace podle MLA (9th ed.)Cunningham, William P. Principles of Environmental Science: Inquiry and Applications. 4th ed. McGraw-Hill Higher Education, 2008.
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