National Geographic Society (U.S.). Special Publications Division. (1971). As we live and breathe: The challenge of our environment. [National Geographic Society.
Chicago Style (17th ed.) CitationNational Geographic Society (U.S.). Special Publications Division. As We Live and Breathe: The Challenge of Our Environment. Washington: [National Geographic Society, 1971.
MLA (8th ed.) CitationNational Geographic Society (U.S.). Special Publications Division. As We Live and Breathe: The Challenge of Our Environment. [National Geographic Society, 1971.
Warning: These citations may not always be 100% accurate.