Cita APA

National Geographic Society Cartographic Division. (1995). Heart of the rockies. Washington, D.C.: National Geographic Society.

Citación estilo Chicago

National Geographic Society Cartographic Division. Heart of the Rockies. Washington, D.C.: National Geographic Society, 1995.

Cita MLA

National Geographic Society Cartographic Division. Heart of the Rockies. Washington, D.C.: National Geographic Society, 1995.

Precaución: Estas citas no son 100% exactas.