Cita APA (7th ed.)

Hickman, c. P., Hickman, F., & Roberts, L. S. (1989). Biology of animals (4th ed.). Mosby college.

Cita Chicago (17th ed.)

Hickman, cleveland P., Frances Hickman, i Larry S. Roberts. Biology of Animals. 4th ed. St. Louis: Mosby college, 1989.

Cita MLA (9th ed.)

Hickman, cleveland P., et al. Biology of Animals. 4th ed. Mosby college, 1989.