APA (7th ed.) Citation

Geographic, N. (2009). A ameaça do Degelo. National Geographic.

Chicago Style (17th ed.) Citation

Geographic, National. A Ameaça Do Degelo. National Geographic, 2009.

MLA (8th ed.) Citation

Geographic, National. A Ameaça Do Degelo. National Geographic, 2009.

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