APA (7th ed.) Citation

Enger, E. D., & Smith, B. F. (2000). Environmental science: A study of interrelationships. McGraw-Hill.

Chicago Style (17th ed.) Citation

Enger, Eldon D., and Bradley F. Smith. Environmental Science: A Study of Interrelationships. New York: McGraw-Hill, 2000.

MLA (9th ed.) Citation

Enger, Eldon D., and Bradley F. Smith. Environmental Science: A Study of Interrelationships. McGraw-Hill, 2000.