National Research Council (U.S.). Highway Research Board. (1973). Environmental considerations in planning, design, and construction. Highway Research Board.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Research Council (U.S.). Highway Research Board. Environmental Considerations in Planning, Design, and Construction. Washington: Highway Research Board, 1973.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Research Council (U.S.). Highway Research Board. Environmental Considerations in Planning, Design, and Construction. Highway Research Board, 1973.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.