Hickman, C. P., Keen, S. L., Eisenhour, D. J., Larson, A., & L'Anson, H. (2017). Integrated principles of zoology (Seventeenth edition.). New York: McGraw-Hill Education.

Hickman, Cleveland P., Susan L. Keen, David J. Eisenhour, Allan Larson, and Helen L'Anson. Integrated Principles of Zoology. Seventeenth edition. New York: McGraw-Hill Education, 2017.

Hickman, Cleveland P., et al. Integrated Principles of Zoology. Seventeenth edition. New York: McGraw-Hill Education, 2017.