Cita APA (7th ed.)

Ruppert, E. E., Fox, R. S., & Barnes, R. D. (2004). Invertebrate zoology: A functional evolutionary approach (Seventh edition.). Brooks/Cole / Thomson Learning.

Cita Chicago (17th ed.)

Ruppert, Edward E., Richard S. Fox, i Robert D. Barnes. Invertebrate Zoology: A Functional Evolutionary Approach. Seventh edition. Belmont, CA: Brooks/Cole / Thomson Learning, 2004.

Cita MLA (9th ed.)

Ruppert, Edward E., et al. Invertebrate Zoology: A Functional Evolutionary Approach. Seventh edition. Brooks/Cole / Thomson Learning, 2004.