APA (7th ed.) Citation

Walter, H. E., & Sayles, L. P. (1949). Biology of the vertebrates: A comparative study of man and his animal allies (3. ed.). Macmillan.

Chicago Style (17th ed.) Citation

Walter, Herbert E., and Leonard P. Sayles. Biology of the Vertebrates: A Comparative Study of Man and His Animal Allies. 3. ed. New York: Macmillan, 1949.

MLA (9th ed.) Citation

Walter, Herbert E., and Leonard P. Sayles. Biology of the Vertebrates: A Comparative Study of Man and His Animal Allies. 3. ed. Macmillan, 1949.