Thumann, A. (1992). Handbook of energy audits (3rd ed.). Fairmont Press.
Lua i Stíl Chicago (17ú heag.)Thumann, Albert. Handbook of Energy Audits. 3rd ed. Lilburn, GA: Fairmont Press, 1992.
Lua MLA (9ú heag.)Thumann, Albert. Handbook of Energy Audits. 3rd ed. Fairmont Press, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.