Cita APA

National Geographic Maps, & National Geographic Maps. (2014). The world: Political. Washington: National Geographic Society.

Citación estilo Chicago

National Geographic Maps, y National Geographic Maps. The World: Political. Washington: National Geographic Society, 2014.

Cita MLA

National Geographic Maps, y National Geographic Maps. The World: Political. Washington: National Geographic Society, 2014.

Precaución: Estas citas no son 100% exactas.