Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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