Hickman, C. P. J., Roberts, L. S., & Keen, S. L. (2009). Integrated principles of zoology (Fourtennth edition, International edition.). McGraw-Hill/Higher Education.
Cita Chicago (17th ed.)Hickman, Cleveland P. Jr, Larry S. Roberts, i Susan L. Keen. Integrated Principles of Zoology. Fourtennth edition, International edition. Boston, MA: McGraw-Hill/Higher Education, 2009.
Cita MLA (9th ed.)Hickman, Cleveland P. Jr, et al. Integrated Principles of Zoology. Fourtennth edition, International edition. McGraw-Hill/Higher Education, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.