Nebel, B. J., & Wright, R. T. (1998). Environmental science: The way world works (Sixth edition.). Prentice Hall.
Chicago Style (17. basım) AtıfNebel, Bernard J., ve Richard T. Wright. Environmental Science: The Way World Works. Sixth edition. Upper Saddle River, New Jersey: Prentice Hall, 1998.
MLA (9th ed.) AtıfNebel, Bernard J., ve Richard T. Wright. Environmental Science: The Way World Works. Sixth edition. Prentice Hall, 1998.
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