Dix, S. M. (1977). Energy: A critical decision for the United States economy (Rev. ed.). Energy Education Publishers.
Lua i Stíl Chicago (17ú heag.)Dix, Samuel M. Energy: A Critical Decision for the United States Economy. Rev. ed. Grand Rapids: Energy Education Publishers, 1977.
Lua MLA (8ú heag.)Dix, Samuel M. Energy: A Critical Decision for the United States Economy. Rev. ed. Energy Education Publishers, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.