Não informado. (1974). Energy Systems and Policy. Taylor & Francis.
Lua i Stíl Chicago (17ú heag.)Não informado. Energy Systems and Policy. New York: Taylor & Francis, 1974.
Lua MLA (8ú heag.)Não informado. Energy Systems and Policy. Taylor & Francis, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.