International Labor Organization. Building, C. E. a. P. W. C. (1968). General report: Building, Civil Engineering and Public Works Committee. Geneva: International Labor Organization. Building, Civil Engineering and Public Works Committee.
استشهاد بنمط شيكاغوInternational Labor Organization. Building, Civil Engineering and Public Works Committee. General Report: Building, Civil Engineering and Public Works Committee. Geneva: International Labor Organization. Building, Civil Engineering and Public Works Committee, 1968.
MLA استشهادInternational Labor Organization. Building, Civil Engineering and Public Works Committee. General Report: Building, Civil Engineering and Public Works Committee. Geneva: International Labor Organization. Building, Civil Engineering and Public Works Committee, 1968.