APA (7th ed.) Citation

National Geographic Society (U.S.). (1979). America's majestic canyons. National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Society (U.S.). America's Majestic Canyons. Washington: National Geographic Society, 1979.

MLA (8th ed.) Citation

National Geographic Society (U.S.). America's Majestic Canyons. National Geographic Society, 1979.

Warning: These citations may not always be 100% accurate.