Fickett, A. P., Gellings, C. W., & Lovins, A. B. Efficient uses of energy.
Lua i Stíl Chicago (17ú heag.)Fickett, Arnold P., Clerk W. Gellings, agus Amory B. Lovins. Efficient Uses of Energy.
Lua MLA (9ú heag.)Fickett, Arnold P., et al. Efficient Uses of Energy.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.