Cita APA

Victor G. Springer, & Gold, J. P. (1989). Sharks in question. Washington, D. C.: Smithsonian.

Citación estilo Chicago

Victor G. Springer, y Joy P. Gold. Sharks in Question. Washington, D. C.: Smithsonian, 1989.

Cita MLA

Victor G. Springer, y Joy P. Gold. Sharks in Question. Washington, D. C.: Smithsonian, 1989.