APA (7th ed.) Zitazioa

ebrary, Inc, & Letcher, T. M. (2009). Climate change: Observed impacts on planet Earth. Elsevier.

Chicago Style (17th ed.) Zitazioa

ebrary, Inc, eta T. M. Letcher. Climate Change: Observed Impacts on Planet Earth. Amsterdam: Elsevier, 2009.

MLA (9th ed.) Zitazioa

ebrary, Inc, eta T. M. Letcher. Climate Change: Observed Impacts on Planet Earth. Elsevier, 2009.