United States. Department of Health, Education, and Welfare. (1930). Transactions of 9th annual Conference of State Sanitary Engineers, held at Chicago, Ill., Oct. 13 and 15, 1928. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Health, Education, and Welfare. Transactions of 9th Annual Conference of State Sanitary Engineers, Held at Chicago, Ill., Oct. 13 and 15, 1928. [Washington]: GPO, 1930.
MLA (9th ed.) CitationUnited States. Department of Health, Education, and Welfare. Transactions of 9th Annual Conference of State Sanitary Engineers, Held at Chicago, Ill., Oct. 13 and 15, 1928. GPO, 1930.
Warning: These citations may not always be 100% accurate.