Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
International Telegraph and Telephone Consultative Committee. Plenary Assembly and International Telegraph and Telephone Consultative Committee and International Telecommunication Union,"CCITTブルーブック : IXth Plenary Assembly, Melbourne, 14-25 November 1988",,日本ITU協会,,,,,,https://cir.nii.ac.jp/crid/1130000794471027200