Cita APA (7a ed.)

Walter, H. E. (1939). Biology of the vertebrates: A comparative study of man and his animal allies (Rev. ed.). The Macmillan Company.

Cita Chicago Style (17a ed.)

Walter, Herbert Eugene. Biology of the Vertebrates: A Comparative Study of Man and His Animal Allies. Rev. ed. New York: The Macmillan Company, 1939.

Cita MLA (9a ed.)

Walter, Herbert Eugene. Biology of the Vertebrates: A Comparative Study of Man and His Animal Allies. Rev. ed. The Macmillan Company, 1939.