Cita APA (7th ed.)

National Geographic. (2007). Atlas of the world (8a. ed.). National Geographic Society.

Cita Chicago (17th ed.)

National Geographic. Atlas of the World. 8a. ed. Washington, D.C: National Geographic Society, 2007.

Cita MLA (9th ed.)

National Geographic. Atlas of the World. 8a. ed. National Geographic Society, 2007.