National Research Council (U.S.). Transportation Research Board & National Research Council (U.S.). Transportation Research Board. Meeting. (2005). Geology and properties of earth materials, 2005. Transportation Research Board.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Research Council (U.S.). Transportation Research Board و National Research Council (U.S.). Transportation Research Board. Meeting. Geology and Properties of Earth Materials, 2005. Washington, D.C: Transportation Research Board, 2005.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Research Council (U.S.). Transportation Research Board و National Research Council (U.S.). Transportation Research Board. Meeting. Geology and Properties of Earth Materials, 2005. Transportation Research Board, 2005.
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