APA (7e ed.) Bronvermelding
Enger, E. D., & Smith, B. F. (1991). Enviromental science: A study of interrelationships (4th ed.). Wm.C.Brown.
Chicago (17e ed.) Bronvermelding
Enger, Eldon D., en Bradley F. Smith. Enviromental Science: A Study of Interrelationships. 4th ed. Michigan: Wm.C.Brown, 1991.
MLA (9e ed.) Bronvermelding
Enger, Eldon D., en Bradley F. Smith. Enviromental Science: A Study of Interrelationships. 4th ed. Wm.C.Brown, 1991.
Let op: Deze citaties zijn niet altijd 100% accuraat.