APA (7th ed.) Citation

Canby, T. Y. (1994). Our Changing Earth. The National Geographic Society.

Chicago Style (17th ed.) Citation

Canby, Thomas Y. Our Changing Earth. The National Geographic Society, 1994.

MLA (8th ed.) Citation

Canby, Thomas Y. Our Changing Earth. The National Geographic Society, 1994.

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