Cita APA (7th ed.)

Ruppert, E. E., & Barnes, R. D. (1994). Invertebrate zoology (6th ed.). Saunders College Pub.

Cita Chicago (17th ed.)

Ruppert, Edward E., i Robert D. Barnes. Invertebrate Zoology. 6th ed. Fort Worth: Saunders College Pub, 1994.

Cita MLA (9th ed.)

Ruppert, Edward E., i Robert D. Barnes. Invertebrate Zoology. 6th ed. Saunders College Pub, 1994.