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
International Civil Aviation Organization,"Pilot skills to make ""look-out"" more effective in visual collision avoidance",,International Civil Aviation Organization,1989,ICAO circular,,,,https://cir.nii.ac.jp/crid/1130282271992373760