Hickman, C. P., Roberts, L. S., & Larson, A. (2001). Integrated principles of zoology (11th ed.). McGraw - Hill.

Hickman, Cleveland P., Larry S. Roberts, and Allan Larson. Integrated Principles of Zoology. 11th ed. Boston: McGraw - Hill, 2001.

Hickman, Cleveland P., et al. Integrated Principles of Zoology. 11th ed. McGraw - Hill, 2001.