Watts, R. G. (2007). Global warming and the future of the earth. Morgan & Claypool Publishers.
Lua i Stíl Chicago (17ú heag.)Watts, Robert G. Global Warming and the Future of the Earth. San Rafael, Calif: Morgan & Claypool Publishers, 2007.
Lua MLA (8ú heag.)Watts, Robert G. Global Warming and the Future of the Earth. Morgan & Claypool Publishers, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.