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.
Precaución: Estas citas no son 100% exactas.