Earle, S. A. (2009). The world is blue: How our fate and the ocean's are one. National Geographic.
Cita Chicago Style (17a ed.)Earle, Sylvia A. The World Is Blue: How Our Fate and the Ocean's Are One. Washington, D.C.: National Geographic, 2009.
Cita MLA (8a ed.)Earle, Sylvia A. The World Is Blue: How Our Fate and the Ocean's Are One. National Geographic, 2009.
Precaución: Estas citas no son 100% exactas.