Cita APA (7th ed.)

Cunningham, W. P. (2008). Principles of Environmental Science: Inquiry and Applications (4th ed.). McGraw-Hill Higher Education.

Cita Chicago (17th ed.)

Cunningham, William P. Principles of Environmental Science: Inquiry and Applications. 4th ed. New York: McGraw-Hill Higher Education, 2008.

Cita MLA (9th ed.)

Cunningham, William P. Principles of Environmental Science: Inquiry and Applications. 4th ed. McGraw-Hill Higher Education, 2008.