United States. Congress. Senate. Committee on Education and Labor & ProQuest (Firm). (1939). Purchase of supplies and the making of contracts by the United States. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Education and Labor and ProQuest (Firm). Purchase of Supplies and the Making of Contracts by the United States. Washington: [publisher not identified], 1939.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Education and Labor and ProQuest (Firm). Purchase of Supplies and the Making of Contracts by the United States. [publisher not identified], 1939.
Warning: These citations may not always be 100% accurate.