Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Zitierstil

Research & exploration: A scholarly publication of the National Geographic Society. Washington-DC: Society.

Chicago Zitierstil

Research & Exploration: A Scholarly Publication of the National Geographic Society. Washington-DC: Society.

MLA Zitierstil

Research & Exploration: A Scholarly Publication of the National Geographic Society. Washington-DC: Society.