APA (7e ed.) Bronvermelding

Chiras, D. D. (1998). Environmental science: A systems approach to sustainable development (5th ed.). Wadsworth Publishing Company.

Chicago (17e ed.) Bronvermelding

Chiras, Daniel D. Environmental Science: A Systems Approach to Sustainable Development. 5th ed. Belmont: Wadsworth Publishing Company, 1998.

MLA (9e ed.) Bronvermelding

Chiras, Daniel D. Environmental Science: A Systems Approach to Sustainable Development. 5th ed. Wadsworth Publishing Company, 1998.