Cita APA (7th ed.)

National Geographic Society (U.S.). (1988). Hidden treasures of the sea. National Geographic Society.

Cita Chicago (17th ed.)

National Geographic Society (U.S.). Hidden Treasures of the Sea. Washington, D.C: National Geographic Society, 1988.

Cita MLA (9th ed.)

National Geographic Society (U.S.). Hidden Treasures of the Sea. National Geographic Society, 1988.