Citazione Stile APA (7a Edizione)
Cunningham, W., & Cunningham, M. A. (2004). Principles of environmental science: Enquiry and applications (2nd ed.). Tata McGraw-Hill.
Citazione stile Chigago Style (17a edizione)
Cunningham, William, e Mary Ann Cunningham. Principles of Environmental Science: Enquiry and Applications. 2nd ed. New Delhi: Tata McGraw-Hill, 2004.
Citatione MLA (9a ed.)
Cunningham, William, e Mary Ann Cunningham. Principles of Environmental Science: Enquiry and Applications. 2nd ed. Tata McGraw-Hill, 2004.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.