APA (7th ed.) Citation

(1971). As We Live And Breathe The Challenge Of Our Environment National Geographic Society. National Geographic.

Chicago Style (17th ed.) Citation

As We Live And Breathe The Challenge Of Our Environment National Geographic Society. National Geographic, 1971.

MLA (8th ed.) Citation

As We Live And Breathe The Challenge Of Our Environment National Geographic Society. National Geographic, 1971.

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