Cita APA (7a ed.)
Nebel, B. J., & Wright, R. T. (1998). Environmental science: The way the world works (6th ed.). Prentice Hall.
Cita Chicago Style (17a ed.)
Nebel, Bernard J., y Richard T. Wright. Environmental Science: The Way the World Works. 6th ed. Upper Saddle River, NJ: Prentice Hall, 1998.
Cita MLA (9a ed.)
Nebel, Bernard J., y Richard T. Wright. Environmental Science: The Way the World Works. 6th ed. Prentice Hall, 1998.
Precaución: Estas citas no son 100% exactas.