Dyfyniad APA

American Society of Heating, Refrigerating and Air-Conditioning Engineers. ASHRAE standard. The Society.

Dyfyniad Arddull Chicago

American Society of Heating, Refrigerating and Air-Conditioning Engineers. ASHRAE Standard. New York, N.Y.: The Society.

Dyfyniad MLA

American Society of Heating, Refrigerating and Air-Conditioning Engineers. ASHRAE Standard. The Society.

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