Citazione Stile APA (7a Edizione)

Johnson, G. B. (2010). Essentials of the living world (3rd ed.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Johnson, George B. Essentials of the Living World. 3rd ed. Boston: McGraw-Hill, 2010.

Citatione MLA (9a ed.)

Johnson, George B. Essentials of the Living World. 3rd ed. McGraw-Hill, 2010.