United States. Federal Supply Service. (1928). General schedule of supplies for fiscal year 1929, 1st supplement of awards to class 7: Cement, gravel, and sand, for period July 1, 1928, to June 30, 1929. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Federal Supply Service. General Schedule of Supplies for Fiscal Year 1929, 1st Supplement of Awards to Class 7: Cement, Gravel, and Sand, for Period July 1, 1928, to June 30, 1929. [Washington]: [publisher not identified], 1928.
MLA (9th ed.) CitationUnited States. Federal Supply Service. General Schedule of Supplies for Fiscal Year 1929, 1st Supplement of Awards to Class 7: Cement, Gravel, and Sand, for Period July 1, 1928, to June 30, 1929. [publisher not identified], 1928.
Warning: These citations may not always be 100% accurate.