Wyman, B. C., & Stevenson, L. H. (2001). The Facts on File dictionary of environmental science (New ed.). Facts on File.
Cita Chicago Style (17a ed.)Wyman, Bruce C., y L. Harold Stevenson. The Facts on File Dictionary of Environmental Science. New ed. New York: Facts on File, 2001.
Cita MLA (9a ed.)Wyman, Bruce C., y L. Harold Stevenson. The Facts on File Dictionary of Environmental Science. New ed. Facts on File, 2001.
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