Cita APA

Sheet Metal and Air Conditioning Contractors' National Association, & Sheet Metal and Air Conditioning Contractors' National Association. (2005). HVAC duct construction standards: Metal and flexible (3. edition.). Chantilly, VA: SMACNA.

Citación estilo Chicago

Sheet Metal and Air Conditioning Contractors' National Association, y Sheet Metal and Air Conditioning Contractors' National Association. HVAC Duct Construction Standards: Metal and Flexible. 3. edition. Chantilly, VA: SMACNA, 2005.

Cita MLA

Sheet Metal and Air Conditioning Contractors' National Association, y Sheet Metal and Air Conditioning Contractors' National Association. HVAC Duct Construction Standards: Metal and Flexible. 3. edition. Chantilly, VA: SMACNA, 2005.