APA (7th ed.) Citation

Enger, E. D., & Smith, B. F. (2010). Environmental science: A study of interrelationships (Twelveth edition.). McGraw-Hill Higher Education.

Chicago Style (17th ed.) Citation

Enger, Eldon D., and Bradley F. Smith. Environmental Science: A Study of Interrelationships. Twelveth edition. New York: McGraw-Hill Higher Education, 2010.

MLA (9th ed.) Citation

Enger, Eldon D., and Bradley F. Smith. Environmental Science: A Study of Interrelationships. Twelveth edition. McGraw-Hill Higher Education, 2010.