Porges, J., & Porges, F. (1976). Handbook of heating, ventilating and air conditioning: Ready-reference tables and data (7th edition.). Newnes-Butterworths.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPorges, John, और F. Porges. Handbook of Heating, Ventilating and Air Conditioning: Ready-reference Tables and Data. 7th edition. London: Newnes-Butterworths, 1976.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPorges, John, और F. Porges. Handbook of Heating, Ventilating and Air Conditioning: Ready-reference Tables and Data. 7th edition. Newnes-Butterworths, 1976.
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