Sheet metal and Air conditioning Contractors' National Association. (1977). Heating and air conditioning systems: Installation standards for one and two family dwellings and multifamily housing including solar (3rd ed.). SMACNA.
Chicago Style (17th ed.) CitationSheet metal and Air conditioning Contractors' National Association. Heating and Air Conditioning Systems: Installation Standards for One and Two Family Dwellings and Multifamily Housing Including Solar. 3rd ed. Vienna, Va.: SMACNA, 1977.
MLA (9th ed.) CitationSheet metal and Air conditioning Contractors' National Association. Heating and Air Conditioning Systems: Installation Standards for One and Two Family Dwellings and Multifamily Housing Including Solar. 3rd ed. SMACNA, 1977.
Warning: These citations may not always be 100% accurate.