Dyfyniad APA

Johnson, C. (2006). Heating, ventilation, and air conditioning: A residential and light commercial text and lab book. Thomson.

Dyfyniad Arddull Chicago

Johnson, Cecil. Heating, Ventilation, and Air Conditioning: A Residential and Light Commercial Text and Lab Book. Clifton Park, NY: Thomson, 2006.

Dyfyniad MLA

Johnson, Cecil. Heating, Ventilation, and Air Conditioning: A Residential and Light Commercial Text and Lab Book. Thomson, 2006.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.