APA Citation

Botkin, D. B., & Keller, E. A. Environmental science: Earth as a living planet (Eighth edition.).

Chicago Style Citation

Botkin, Daniel B., and Edward A. Keller. Environmental Science: Earth As a Living Planet. Eighth edition.

MLA Citation

Botkin, Daniel B., and Edward A. Keller. Environmental Science: Earth As a Living Planet. Eighth edition.

Warning: These citations may not always be 100% accurate.