APA (7th ed.) Citation

Skinner, B. J., Botkin, D. B., & Porter, S. C. (1999). The blue planet: An introduction to earth system science (2nd ed.). John Wiley & Sons.

Chicago Style (17th ed.) Citation

Skinner, Brian J., Daniel B. Botkin, and Stephen C. Porter. The Blue Planet: An Introduction to Earth System Science. 2nd ed. New York: John Wiley & Sons, 1999.

MLA (9th ed.) Citation

Skinner, Brian J., et al. The Blue Planet: An Introduction to Earth System Science. 2nd ed. John Wiley & Sons, 1999.