Enger, E. D., & Smith, B. F. (2004). Environmental science: A study of interrelationships (9th ed.). Mc Graw hill.
Stile di citazione ChicagoEnger, Eldon D., e Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 9th ed. Boston: Mc Graw hill, 2004.
Citazione MLAEnger, Eldon D., e Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 9th ed. Mc Graw hill, 2004.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.