APA

Earle S. A., . (2009). The world is blue: how our fate and the ocean's are one. Washington,D.C: National Geographic Society.

Chicago

Earle Sylvia A, . 2009. The world is blue: how our fate and the ocean's are one. Washington,D.C: National Geographic Society.

Harvard

Earle S. A., . (2009). The world is blue: how our fate and the ocean's are one. Washington,D.C: National Geographic Society.

MLA

Earle Sylvia A, . The world is blue: how our fate and the ocean's are one. Washington,D.C: National Geographic Society. 2009.