United States. Bureau of the Census. 1977 census of construction industries: Industry series, installation or erection of building equipment, N.E.C., special trade contractors, SIC 1796.
Chicago Style (17th ed.) CitationUnited States. Bureau of the Census. 1977 Census of Construction Industries: Industry Series, Installation or Erection of Building Equipment, N.E.C., Special Trade Contractors, SIC 1796.
MLA (9th ed.) CitationUnited States. Bureau of the Census. 1977 Census of Construction Industries: Industry Series, Installation or Erection of Building Equipment, N.E.C., Special Trade Contractors, SIC 1796.
Warning: These citations may not always be 100% accurate.