Nebel, B. J., & Wright, R. T. (1993). Environmental science: The way the world works (4th ed.). Prentice Hall.
Cita Chicago Style (17a ed.)Nebel, Bernard J., y Richard T. Wright. Environmental Science: The Way the World Works. 4th ed. New Jersey: Prentice Hall, 1993.
Cita MLA (8a ed.)Nebel, Bernard J., y Richard T. Wright. Environmental Science: The Way the World Works. 4th ed. Prentice Hall, 1993.
Precaución: Estas citas no son 100% exactas.