Smith, R. E. (2007). Electricity for refrigeration, heating, and air conditioning (7th ed.). Thomson/Delmar Learning.
Dyfyniad Arddull ChicagoSmith, Russell E. Electricity for Refrigeration, Heating, and Air Conditioning. 7th ed. Austalia: Thomson/Delmar Learning, 2007.
Dyfyniad MLASmith, Russell E. Electricity for Refrigeration, Heating, and Air Conditioning. 7th ed. Thomson/Delmar Learning, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.