Smil. Energy and Civilization. The MIT Press.
Lua i Stíl Chicago (17ú heag.)Smil. Energy and Civilization. The MIT Press.
Lua MLA (9ú heag.)Smil. Energy and Civilization. The MIT Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.