APA ציטוט

Letcher,Trevor M. (2009). Climate Change: Observed impacts on planet earth. Elsevier.

Chicago Edition Citation

Letcher,Trevor M. Climate Change: Observed Impacts on Planet Earth. Amsterdam: Elsevier, 2009.

ציטוט MLA

Letcher,Trevor M. Climate Change: Observed Impacts on Planet Earth. Elsevier, 2009.