Washington (State). Department of Transportation, Washington (State). Department of Highways, Washington State Highway Commission, & Rand McNally and Company. (1937). Washington State highways.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Washington (State). Department of Transportation, Washington (State). Department of Highways, Washington State Highway Commission, و Rand McNally and Company. Washington State Highways. Olympia, 1937.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Washington (State). Department of Transportation, et al. Washington State Highways. 1937.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.