APA (7e ed.) Bronvermelding
Enger, E. D., & Smith, B. F. (1992). Environmental science: A study of interrelationships (4th ed.). W.C. Brown.
Chicago (17e ed.) Bronvermelding
Enger, Eldon D., en Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 4th ed. Dubuque, IA: W.C. Brown, 1992.
MLA (9e ed.) Bronvermelding
Enger, Eldon D., en Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 4th ed. W.C. Brown, 1992.
Let op: Deze citaties zijn niet altijd 100% accuraat.