Porges, J., & Porges, F. (1976). Handbook of heating, ventilating and air conditioning: Ready-reference tables and data (7th edition.). Newnes-Butterworths.
Lua i Stíl Chicago (17ú heag.)Porges, John, agus F. Porges. Handbook of Heating, Ventilating and Air Conditioning: Ready-reference Tables and Data. 7th edition. London: Newnes-Butterworths, 1976.
Lua MLA (9ú heag.)Porges, John, agus F. Porges. Handbook of Heating, Ventilating and Air Conditioning: Ready-reference Tables and Data. 7th edition. Newnes-Butterworths, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.