Standard specifications for construction of roads and bridges on Federal highway projects. FP-57.
APA Citation
United States. Bureau of Public Roads. (1957). Standard specifications for construction of roads and bridges on Federal highway projects. FP-57. Washington: U.S. Govt. Print. Off..
MLA Citation
United States. Bureau of Public Roads. Standard Specifications for Construction of Roads And Bridges On Federal Highway Projects. FP-57. Washington: U.S. Govt. Print. Off., 1957.
Warning: These citations may not always be complete (especially for serials).