Seminar on the Use of Systems of Models in Planning, Moscow, 1974, & United Nations. Economic Commission for Europe. (1975). Use of the systems of models in planning. United Nations.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Seminar on the Use of Systems of Models in Planning, Moscow, 1974, و United Nations. Economic Commission for Europe. Use of the Systems of Models in Planning. New York: United Nations, 1975.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Seminar on the Use of Systems of Models in Planning, Moscow, 1974, و United Nations. Economic Commission for Europe. Use of the Systems of Models in Planning. United Nations, 1975.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.