APA (7e ed.) Bronvermelding
Enger, E. D., Smith, B. F., & Bockarie, A. T. (2006). Environmental science: A study of interrelationships (10th ed.). McGraw-Hill.
Chicago (17e ed.) Bronvermelding
Enger, Eldon D., Bradley F. Smith, en Anne Todd Bockarie. Environmental Science: A Study of Interrelationships. 10th ed. Boston: McGraw-Hill, 2006.
MLA (9e ed.) Bronvermelding
Enger, Eldon D., et al. Environmental Science: A Study of Interrelationships. 10th ed. McGraw-Hill, 2006.
Let op: Deze citaties zijn niet altijd 100% accuraat.