Dyfyniad APA
Air Conditioning Contractors of America, PHCC Educational Foundation, & Refrigeration Service Engineers Society. (2009). HVACR 201. Delmar Cengage Learning.
Dyfyniad Arddull Chicago
Air Conditioning Contractors of America, PHCC Educational Foundation, and Refrigeration Service Engineers Society. HVACR 201. Clifton Park, New York: Delmar Cengage Learning, 2009.
Dyfyniad MLA
Air Conditioning Contractors of America, et al. HVACR 201. Delmar Cengage Learning, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.