Citazione Stile APA (7a Edizione)
Enger, E. D., & Smith, B. F. (2004). Environmental science: A study of interrelationships (9th ed.). McGraw-Hill Higher Education.
Citazione stile Chigago Style (17a edizione)
Enger, Eldon D., e Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 9th ed. Boston: McGraw-Hill Higher Education, 2004.
Citatione MLA (9a ed.)
Enger, Eldon D., e Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 9th ed. McGraw-Hill Higher Education, 2004.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.