National Science Foundation (U.S.) & National Research Council (U.S.). Highway Research Board. Committee on Physico-chemical Phenomena in Soils. (1969). Effects of temperature and heat on engineering behavior of soils: Proceedings of an international conference held at Washington, D.C., January 16, 1969, with the support of the National Science Foundation. Highway Research Board, National Research Council.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Science Foundation (U.S.) و National Research Council (U.S.). Highway Research Board. Committee on Physico-chemical Phenomena in Soils. Effects of Temperature and Heat on Engineering Behavior of Soils: Proceedings of an International Conference Held at Washington, D.C., January 16, 1969, with the Support of the National Science Foundation. Washington: Highway Research Board, National Research Council, 1969.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)National Science Foundation (U.S.) و National Research Council (U.S.). Highway Research Board. Committee on Physico-chemical Phenomena in Soils. Effects of Temperature and Heat on Engineering Behavior of Soils: Proceedings of an International Conference Held at Washington, D.C., January 16, 1969, with the Support of the National Science Foundation. Highway Research Board, National Research Council, 1969.