APA (7th ed.) Citation

United States. Federal Supply Service. (1927). General schedule of supplies for fiscal year 1928, 1st supplement of awards to class 7: Lumber, millwork, excelsior, sawdust, packing boxes, building materials, slag, stone, and asphalt, oil, and tar for road building, for period from July 1, 1927 to June 30, 1928. GPO.

Chicago Style (17th ed.) Citation

United States. Federal Supply Service. General Schedule of Supplies for Fiscal Year 1928, 1st Supplement of Awards to Class 7: Lumber, Millwork, Excelsior, Sawdust, Packing Boxes, Building Materials, Slag, Stone, and Asphalt, Oil, and Tar for Road Building, for Period from July 1, 1927 to June 30, 1928. [Washington]: GPO, 1927.

MLA (9th ed.) Citation

United States. Federal Supply Service. General Schedule of Supplies for Fiscal Year 1928, 1st Supplement of Awards to Class 7: Lumber, Millwork, Excelsior, Sawdust, Packing Boxes, Building Materials, Slag, Stone, and Asphalt, Oil, and Tar for Road Building, for Period from July 1, 1927 to June 30, 1928. GPO, 1927.