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Lua i Stíl Chicago (17ú heag.)Advances in the Economics of Energy and Resources. Greenwich, Conn: JAI Press, 1979.
Lua MLA (9ú heag.)Advances in the Economics of Energy and Resources. JAI Press, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.