(1949). Heating, ventilating and air conditioning guide: 1949 : an istrument of Service prepared for the profession (27th ed.). New York, N.Y.: American Society of Heating and Ventilating Engineers.
Παραπομπή Chicago StyleHeating, Ventilating and Air Conditioning Guide: 1949 : An Istrument of Service Prepared for the Profession. 27th ed. New York, N.Y.: American Society of Heating and Ventilating Engineers, 1949.
Παραπομπή MLAHeating, Ventilating and Air Conditioning Guide: 1949 : An Istrument of Service Prepared for the Profession. 27th ed. New York, N.Y.: American Society of Heating and Ventilating Engineers, 1949.
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