Cita APA (7th ed.)

Botkin, D. B., & Keller, E. A. (2003). Environmental science: Earth as a living planet (Forth edition.). Wiley.

Cita Chicago (17th ed.)

Botkin, Daniel B., i Edward A. Keller. Environmental Science: Earth as a Living Planet. Forth edition. New York: Wiley, 2003.

Cita MLA (8th ed.)

Botkin, Daniel B., i Edward A. Keller. Environmental Science: Earth as a Living Planet. Forth edition. Wiley, 2003.