Cita APA (7th ed.)

.Smith, W. H. (1990). Air pollution and forests: Interactions between air contaminants and forest ecosystems (2nd ed.). Springer-Verlag.

Cita Chicago (17th ed.)

.Smith, William H. Air Pollution and Forests: Interactions Between Air Contaminants and Forest Ecosystems. 2nd ed. New York: Springer-Verlag, 1990.

Cita MLA (9th ed.)

.Smith, William H. Air Pollution and Forests: Interactions Between Air Contaminants and Forest Ecosystems. 2nd ed. Springer-Verlag, 1990.