APA Edition Citation

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

Chicago Edition Citation

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

MLA Edition Citation

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