APA (7th ed.) Citation

Botkin, D. B., & Keller, E. A. (1997). Environmental science: Earth as a living planet (2nd ed.). Wiley.

Chicago Style (17th ed.) Citation

Botkin, Daniel B., and Edward A. Keller. Environmental Science: Earth as a Living Planet. 2nd ed. New York: Wiley, 1997.

MLA (8th ed.) Citation

Botkin, Daniel B., and Edward A. Keller. Environmental Science: Earth as a Living Planet. 2nd ed. Wiley, 1997.