Não informado. (1927). California highways and public works. State of California, Department of Public Works.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. California Highways and Public Works. Sacramento, Calif: State of California, Department of Public Works, 1927.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. California Highways and Public Works. State of California, Department of Public Works, 1927.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.