Citazione Stile APA (7a Edizione)

Enger, E. D., & Smith, B. F. (2000). Environmental Science: A Study of Interrelationships (7th ed.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Enger, Eldon D., e Bradley F. Smith. Environmental Science: A Study of Interrelationships. 7th ed. Boston: McGraw-Hill, 2000.

Citatione MLA (9a ed.)

Enger, Eldon D., e Bradley F. Smith. Environmental Science: A Study of Interrelationships. 7th ed. McGraw-Hill, 2000.