United States. Bureau of Labor Statistics. (1979). Labor and material requirements for sewer works construction.
Chicago Style (17th ed.) CitationUnited States. Bureau of Labor Statistics. Labor and Material Requirements for Sewer Works Construction. 1979.
MLA (9th ed.) CitationUnited States. Bureau of Labor Statistics. Labor and Material Requirements for Sewer Works Construction. 1979.
Warning: These citations may not always be 100% accurate.