Citazione Stile APA (7a Edizione)

Botkin, D. B., & Keller, E. A. (2011). Environmental science: Earth as a living planet (8th ed.). Wiley.

Citazione stile Chigago Style (17a edizione)

Botkin, Daniel B., e Edward A. Keller. Environmental Science: Earth as a Living Planet. 8th ed. Hoboken, N.J: Wiley, 2011.

Citatione MLA (9a ed.)

Botkin, Daniel B., e Edward A. Keller. Environmental Science: Earth as a Living Planet. 8th ed. Wiley, 2011.