United States. Bureau of the Census. 1977 census of construction industries: Industry series, general contractors--single-family houses, SIC 1521.
Chicago Style (17th ed.) CitationUnited States. Bureau of the Census. 1977 Census of Construction Industries: Industry Series, General Contractors--single-family Houses, SIC 1521.
MLA (9th ed.) CitationUnited States. Bureau of the Census. 1977 Census of Construction Industries: Industry Series, General Contractors--single-family Houses, SIC 1521.
Warning: These citations may not always be 100% accurate.