Cita APA

National Geographic School Publishing & National geographic Society. (2013). National geographic world cultures and geography: Geo. National Geographic School Publishing.

Citación estilo Chicago

National Geographic School Publishing and National geographic Society. National Geographic World Cultures and Geography: Geo. Jefferson City, MO: National Geographic School Publishing, 2013.

Cita MLA

National Geographic School Publishing and National geographic Society. National Geographic World Cultures and Geography: Geo. National Geographic School Publishing, 2013.