Não informado. World energy industry. Business Information Display.
Lua i Stíl Chicago (17ú heag.)Não informado. World Energy Industry. Los Angeles, Calif: Business Information Display.
Lua MLA (8ú heag.)Não informado. World Energy Industry. Business Information Display.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.