Citazione Stile APA (7a Edizione)

Cunningham, W. P., & Cunningham, M. A. (2008). Principles of Environmental Science: Inquiry & Applications (4th ed.). Tata McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Cunningham, William P., e Mary Ann Cunningham. Principles of Environmental Science: Inquiry & Applications. 4th ed. New Delhi: Tata McGraw-Hill, 2008.

Citatione MLA (9a ed.)

Cunningham, William P., e Mary Ann Cunningham. Principles of Environmental Science: Inquiry & Applications. 4th ed. Tata McGraw-Hill, 2008.