Harrison, K. D. (2010). The last speakers: The quest to save the world's most endangered languages. National Geographic.
Cita Chicago Style (17a ed.)Harrison, K. David. The Last Speakers: The Quest to Save the World's Most Endangered Languages. Washington, D.C.: National Geographic, 2010.
Cita MLA (8a ed.)Harrison, K. David. The Last Speakers: The Quest to Save the World's Most Endangered Languages. National Geographic, 2010.
Precaución: Estas citas no son 100% exactas.