APA (7th ed.) Citation

United Nations. Economic Commission for Europe & United Nations. Secretariat. Dept. of Social Affairs. (1951). Directory of building research and development organizations in Europe. s.n.

Chicago Style (17th ed.) Citation

United Nations. Economic Commission for Europe and United Nations. Secretariat. Dept. of Social Affairs. Directory of Building Research and Development Organizations in Europe. Geneva: s.n, 1951.

MLA (9th ed.) Citation

United Nations. Economic Commission for Europe and United Nations. Secretariat. Dept. of Social Affairs. Directory of Building Research and Development Organizations in Europe. s.n, 1951.