APA (7th ed.) Citation

National Geographic Society (U.S.). Cartographic Division & Chamberlin, W. (1965). Vietnam, Cambodia, Laos, and Eastern Thailand. The Society.

Chicago Style (17th ed.) Citation

National Geographic Society (U.S.). Cartographic Division and Wellman Chamberlin. Vietnam, Cambodia, Laos, and Eastern Thailand. Washington: The Society, 1965.

MLA (9th ed.) Citation

National Geographic Society (U.S.). Cartographic Division and Wellman Chamberlin. Vietnam, Cambodia, Laos, and Eastern Thailand. The Society, 1965.