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Lua i Stíl Chicago (17ú heag.)Soren, Dalager. Experience of The Nordic Countries in Tackling The Environmental Impacts of Energy Supply and Use. London: World Energy Council, 1992.
Lua MLA (9ú heag.)Soren, Dalager. Experience of The Nordic Countries in Tackling The Environmental Impacts of Energy Supply and Use. World Energy Council, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.