APA
United Nations. Economic Commission for Europe, United Nations. Economic Commission for Europe, . (1983). Catalogue of building systems and components approved at the national level and aimed at international trade. New: York United Nations U. S. A.
Chicago
United Nations. Economic Commission for Europe, United Nations. Economic Commission for Europe, . 1983. Catalogue of building systems and components approved at the national level and aimed at international trade. New: York United Nations U. S. A.
Harvard
United Nations. Economic Commission for Europe, United Nations. Economic Commission for Europe, . (1983). Catalogue of building systems and components approved at the national level and aimed at international trade. New: York United Nations U. S. A.
MLA
United Nations. Economic Commission for Europe, United Nations. Economic Commission for Europe, . Catalogue of building systems and components approved at the national level and aimed at international trade. New: York United Nations U. S. A. 1983.