National Research Council (U.S.). Highway Research Board. (1961). Soil stabilization with portland cement. National Academy of Sciences-National Research Council.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Research Council (U.S.). Highway Research Board. Soil Stabilization with Portland Cement. Washington, D.C: National Academy of Sciences-National Research Council, 1961.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Research Council (U.S.). Highway Research Board. Soil Stabilization with Portland Cement. National Academy of Sciences-National Research Council, 1961.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.