APA (7e ed.) Bronvermelding

Cunningham, W. P., & Cunningham, M. A. (2020). Principles of environmental science: Inquiry and applications (Ninth edition.). McGraw-Hill Higher Education.

Chicago (17e ed.) Bronvermelding

Cunningham, William P., en Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. Ninth edition. Boston: McGraw-Hill Higher Education, 2020.

MLA (9e ed.) Bronvermelding

Cunningham, William P., en Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. Ninth edition. McGraw-Hill Higher Education, 2020.