Cita APA

Nebel, B. J., & Kormondy, E. J. (1981). Environmental science: The way the world works. New Jersey: Prentice-Hall.

Citación estilo Chicago

Nebel, Bernard J., y E. J. Kormondy. Environmental Science: The Way the World Works. New Jersey: Prentice-Hall, 1981.

Cita MLA

Nebel, Bernard J., y E. J. Kormondy. Environmental Science: The Way the World Works. New Jersey: Prentice-Hall, 1981.