APA (7e ed.) Bronvermelding

Enger, E. D., Bockarie, A. T., & Smith, B. F. (2006). Environmental science: Study of interrelationships (Tenth edition.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Enger, Eldon D., Anne Todd Bockarie, en Bradley F. Smith. Environmental Science: Study of Interrelationships. Tenth edition. Boston: McGraw-Hill, 2006.

MLA (9e ed.) Bronvermelding

Enger, Eldon D., et al. Environmental Science: Study of Interrelationships. Tenth edition. McGraw-Hill, 2006.