Washington (State). Department of Transportation, Washington (State). Department of Highways, Washington State Highway Commission, & Rand McNally and Company. (1937). Washington State highways.
Chicago Style (17th ed.) CitationWashington (State). Department of Transportation, Washington (State). Department of Highways, Washington State Highway Commission, and Rand McNally and Company. Washington State Highways. Olympia, 1937.
MLA (8th ed.) CitationWashington (State). Department of Transportation, et al. Washington State Highways. 1937.
Warning: These citations may not always be 100% accurate.