Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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