National Academy of Engineering & Eno Foundation for Highway Traffic Control. (1967). Traffic safety, a national problem: A symposium. Eno Foundation for Highway Traffic Control.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Academy of Engineering و Eno Foundation for Highway Traffic Control. Traffic Safety, a National Problem: A Symposium. Saugatuck, Conn.,: Eno Foundation for Highway Traffic Control, 1967.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)National Academy of Engineering و Eno Foundation for Highway Traffic Control. Traffic Safety, a National Problem: A Symposium. Eno Foundation for Highway Traffic Control, 1967.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.