Citazione Stile APA (7a Edizione)

Leon Harris, C. (1995). Concepts in zoology (2nd ed.). Harper Collins College Publishers.

Citazione stile Chigago Style (17a edizione)

Leon Harris, C. Concepts in Zoology. 2nd ed. New York: Harper Collins College Publishers, 1995.

Citatione MLA (9a ed.)

Leon Harris, C. Concepts in Zoology. 2nd ed. Harper Collins College Publishers, 1995.