Wright, R. T., & Nebel, B. J. (2002). Environmental science: Toward a sustainable future (Eighth edition.). Pearson Education.
Citace podle Chicago (17th ed.)Wright, Richard T., a Bernard J. Nebel. Environmental Science: Toward a Sustainable Future. Eighth edition. Upper Saddle River, New Jersey: Pearson Education, 2002.
Citace podle MLA (9th ed.)Wright, Richard T., a Bernard J. Nebel. Environmental Science: Toward a Sustainable Future. Eighth edition. Pearson Education, 2002.
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