APA (7th ed.) Citation

Harrison, K. D. (2010). The last speakers: The quest to save the world's most endangered languages. National Geographic.

Chicago Style (17th ed.) Citation

Harrison, K. David. The Last Speakers: The Quest to Save the World's Most Endangered Languages. Washington, D.C.: National Geographic, 2010.

MLA (8th ed.) Citation

Harrison, K. David. The Last Speakers: The Quest to Save the World's Most Endangered Languages. National Geographic, 2010.

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