APA (7e ed.) Bronvermelding

Cunningham, W. P., & Cunningham, M. A. (2013). Principles of environmental science: Inquiry & application (Seventh edition.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Cunningham, William P., en Mary Ann Cunningham. Principles of Environmental Science: Inquiry & Application. Seventh edition. New York, NY: McGraw-Hill, 2013.

MLA (9e ed.) Bronvermelding

Cunningham, William P., en Mary Ann Cunningham. Principles of Environmental Science: Inquiry & Application. Seventh edition. McGraw-Hill, 2013.