Cita APA

Botkin, D. B., & Keller, E. A. (1995). Environmental science: Earth as a living planet. Wiley.

Chicago Edition Citation

Botkin, Daniel B., i Edward A. Keller. Environmental Science: Earth as a Living Planet. New York: Wiley, 1995.

Cita MLA

Botkin, Daniel B., i Edward A. Keller. Environmental Science: Earth as a Living Planet. Wiley, 1995.