Enger, E. D., & Smith, B. F. (2004). Environmental science: A study of interrelationships. (9th ed.). Boston: McGraw-Hill Higher Education.
Citação norma ChicagoEnger, Eldon D., e Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 9th ed. Boston: McGraw-Hill Higher Education, 2004.
Citação norma MLAEnger, Eldon D., e Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 9th ed. Boston: McGraw-Hill Higher Education, 2004.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.