Cita APA (7th ed.)

Barnes, R. D. (1968). Invertebrate zoology (2a. ed.). W.B. Saunders.

Cita Chicago (17th ed.)

Barnes, Robert D. Invertebrate Zoology. 2a. ed. Filadelfia: W.B. Saunders, 1968.

Cita MLA (9th ed.)

Barnes, Robert D. Invertebrate Zoology. 2a. ed. W.B. Saunders, 1968.