.Smith, W. H. (1990). Air pollution and forests: Interactions between air contaminants and forest ecosystems (2nd ed.). Springer-Verlag.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र.Smith, William H. Air Pollution and Forests: Interactions Between Air Contaminants and Forest Ecosystems. 2nd ed. New York: Springer-Verlag, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्र.Smith, William H. Air Pollution and Forests: Interactions Between Air Contaminants and Forest Ecosystems. 2nd ed. Springer-Verlag, 1990.
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