Não informado. (1979). Energy Engineering: Journal of the Association of Energy Engineers. Association of Energy Engineering.
Lua i Stíl Chicago (17ú heag.)Não informado. Energy Engineering: Journal of the Association of Energy Engineers. Atlanta, Ga: Association of Energy Engineering, 1979.
Lua MLA (8ú heag.)Não informado. Energy Engineering: Journal of the Association of Energy Engineers. Association of Energy Engineering, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.