KENT, G. C., & CARR, R. K. (2002). Comparative anatomy of the vertebrates.-- ed.9. McGraw-Hill.

KENT, George C., and Robert K. CARR. Comparative Anatomy of the Vertebrates.-- Ed.9. Boston: McGraw-Hill, 2002.

KENT, George C., and Robert K. CARR. Comparative Anatomy of the Vertebrates.-- Ed.9. McGraw-Hill, 2002.