Cunningham, W. P., & Cunningham, M. A. (2017). Principles of environmental science: Inquiry & application (Eighth editon.). McGraw-Hill Education.
Citazione stile Chigago Style (17a edizione)Cunningham, William P., e Mary Ann Cunningham. Principles of Environmental Science: Inquiry & Application. Eighth editon. New York, NY: McGraw-Hill Education, 2017.
Citatione MLA (9a ed.)Cunningham, William P., e Mary Ann Cunningham. Principles of Environmental Science: Inquiry & Application. Eighth editon. McGraw-Hill Education, 2017.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.