著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
United Nations Conference on Trade and Development. Secretariat and United Nations Conference on Trade and Development. Special Committee on Preferences,"Operation and effects of the generalized system of preferences : selected studies submitted to the fifth session of the Special Committee on Preferences, Geneva, 3-13 April 1973",,U.N.,1974,Document,,,,https://cir.nii.ac.jp/crid/1130282272563361280