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.
Lua i Stíl Chicago (17ú heag.)Seminar on the Use of Systems of Models in Planning, Moscow, 1974, agus United Nations. Economic Commission for Europe. Use of the Systems of Models in Planning. New York: United Nations, 1975.
Lua MLA (9ú heag.)Seminar on the Use of Systems of Models in Planning, Moscow, 1974, agus United Nations. Economic Commission for Europe. Use of the Systems of Models in Planning. United Nations, 1975.
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