著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Ryuji Wakuta,Profitability and Double Jeopardy in Bank Issued Credit Cards : An Analysis on Data of Prior Research,"京都学園大学経営学部論集 = The Kyoto Gakuen University review, Faculty of Business Administration",0916734X,亀岡 : 京都学園大学経営学部学会,2014-12,24,1,41-57,https://cir.nii.ac.jp/crid/1520009407522474240,