Cita APA (7a ed.)

Botkin, D. B., & Keller, E. A. (2005). Environmental science: Earth as a living planet (5th ed.). John Wiley.

Cita Chicago Style (17a ed.)

Botkin, Daniel B., y Edward A. Keller. Environmental Science: Earth as a Living Planet. 5th ed. New York: John Wiley, 2005.

Cita MLA (9a ed.)

Botkin, Daniel B., y Edward A. Keller. Environmental Science: Earth as a Living Planet. 5th ed. John Wiley, 2005.