Cita APA

Nebel, B. J., & Wright, R. T. (1981). Environmental Science: The way the world works (4. edition --.). Englewood Cliffs, N.J.: Prentice Hall.

Citación estilo Chicago

Nebel, Bernard J., y Richard T. Wright. Environmental Science: The Way the World Works. 4. edition --. Englewood Cliffs, N.J.: Prentice Hall, 1981.

Cita MLA

Nebel, Bernard J., y Richard T. Wright. Environmental Science: The Way the World Works. 4. edition --. Englewood Cliffs, N.J.: Prentice Hall, 1981.