(1978). Man's use of energy resources [transparensi]. Chepstow, Eng. : Audio-Visual Productions.
Lua i Stíl Chicago (17ú heag.)Man's Use of Energy Resources [transparensi]. Chepstow, Eng. : Audio-Visual Productions, 1978.
Lua MLA (9ú heag.)Man's Use of Energy Resources [transparensi]. Chepstow, Eng. : Audio-Visual Productions, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.