Cita APA

National Geographic Society (U.S.). (1999). National Geographic United States atlas for young explorers. Washington, D.C: National Geographic Society.

Citación estilo Chicago

National Geographic Society (U.S.). National Geographic United States Atlas for Young Explorers. Washington, D.C: National Geographic Society, 1999.

Cita MLA

National Geographic Society (U.S.). National Geographic United States Atlas for Young Explorers. Washington, D.C: National Geographic Society, 1999.

Precaución: Estas citas no son 100% exactas.