American Society of Heating, Refrigerating and Air-Conditioning Engineers. (1973). ASHRAE handbook & product directory. American Society of Heating, Refrigerating and Air-Conditioning Engineers.
Dyfyniad Arddull ChicagoAmerican Society of Heating, Refrigerating and Air-Conditioning Engineers. ASHRAE Handbook & Product Directory. New York, N.Y.: American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1973.
Dyfyniad MLAAmerican Society of Heating, Refrigerating and Air-Conditioning Engineers. ASHRAE Handbook & Product Directory. American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.