Cita APA (7a ed.)
Enger, E. D., & Smith, B. F. (1992). Environmental science: A study of interrelationships (4th ed.). W.C. Brown.
Cita Chicago Style (17a ed.)
Enger, Eldon D., y Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 4th ed. Dubuque, IA: W.C. Brown, 1992.
Cita MLA (9a ed.)
Enger, Eldon D., y Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 4th ed. W.C. Brown, 1992.
Precaución: Estas citas no son 100% exactas.