APA (7th ed.) Citation

National Geographic Society (U.S.). Special Publications Division. (1988). America's hidden wilderness: Lands of seclusion. The Society.

Chicago Style (17th ed.) Citation

National Geographic Society (U.S.). Special Publications Division. America's Hidden Wilderness: Lands of Seclusion. Washington, D.C: The Society, 1988.

MLA (9th ed.) Citation

National Geographic Society (U.S.). Special Publications Division. America's Hidden Wilderness: Lands of Seclusion. The Society, 1988.