Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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