World Energy Conference. Conservation Commission. (1978). World energy: Looking ahead to 2020. Published for the World Energy Conference by IPC Science and Technology Press.
Lua i Stíl Chicago (17ú heag.)World Energy Conference. Conservation Commission. World Energy: Looking Ahead to 2020. Guildford, [Eng.]: Published for the World Energy Conference by IPC Science and Technology Press, 1978.
Lua MLA (9ú heag.)World Energy Conference. Conservation Commission. World Energy: Looking Ahead to 2020. Published for the World Energy Conference by IPC Science and Technology Press, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.