APA-viite (7. p.)
Enger, E. D., Smith, B. F., & Bockarie, A. T. (2006). Environmental science: A study of interrelationships (10th ed.). McGraw-Hill.
Chicago-viite (17. p.)
Enger, Eldon D., Bradley F. Smith, ja Anne Todd Bockarie. Environmental Science: A Study of Interrelationships. 10th ed. Boston: McGraw-Hill, 2006.
MLA-viite (9. p.)
Enger, Eldon D., et al. Environmental Science: A Study of Interrelationships. 10th ed. McGraw-Hill, 2006.
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