General location of national system of interstate highway :
including all additional routes at urban areas designated in September, 1955.

APA Citation

United States. Bureau of Public Roads. (1955). General location of national system of interstate highway: including all additional routes at urban areas designated in September, 1955. Washington: U.S. Govt. Print. Off..

MLA Citation

United States. Bureau of Public Roads. General Location of National System of Interstate Highway: Including All Additional Routes At Urban Areas Designated In September, 1955. Washington: U.S. Govt. Print. Off., 1955.

Warning: These citations may not always be complete (especially for serials).