Hornbeck, P. L., & Okerlund, G. A. (1976). Visual values for the highway user: An engineer's workbook. U.S. Dept. of Transportation, Federal Highway Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Chicago Style (17th ed.) CitationHornbeck, Peter L., and Garland A. Okerlund. Visual Values for the Highway User: An Engineer's Workbook. [Washington]: U.S. Dept. of Transportation, Federal Highway Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off, 1976.
MLA (9th ed.) CitationHornbeck, Peter L., and Garland A. Okerlund. Visual Values for the Highway User: An Engineer's Workbook. U.S. Dept. of Transportation, Federal Highway Administration : for sale by the Supt. of Docs., U.S. Govt. Print. Off, 1976.
Warning: These citations may not always be 100% accurate.