APA (7e ed.) Bronvermelding

Enger, E., & Smith, B. (1995). Pollution and policy. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Enger, Eldon, en Bradley Smith. Pollution and Policy. Boston: McGraw-Hill, 1995.

MLA (9e ed.) Bronvermelding

Enger, Eldon, en Bradley Smith. Pollution and Policy. McGraw-Hill, 1995.