Cita APA (7a ed.)
Helvarg, D. (2005). The Ocean and Costal Conservation Guide: The Blue Movement Directory. OISLAND PRESS.
Cita Chicago Style (17a ed.)
Helvarg, David. The Ocean and Costal Conservation Guide: The Blue Movement Directory. Washington DC: OISLAND PRESS, 2005.
Cita MLA (9a ed.)
Helvarg, David. The Ocean and Costal Conservation Guide: The Blue Movement Directory. OISLAND PRESS, 2005.
Precaución: Estas citas no son 100% exactas.