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
"Ries, Al and Trout, Jack",Positioning : the battle for your mind,20th anniversary ed,McGraw-Hill,2001,,,0071359168,,https://cir.nii.ac.jp/crid/1130000794047945856