Cita APA (7a ed.)

Storer, T. I., & Usinger, R. L. (1961). Elements of zoology (2nd. ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Storer, Tracy I., y Robert L. Usinger. Elements of Zoology. 2nd. ed. New York: McGraw-Hill, 1961.

Cita MLA (8a ed.)

Storer, Tracy I., y Robert L. Usinger. Elements of Zoology. 2nd. ed. McGraw-Hill, 1961.