Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
"丸山, 一彦",<Articles>A study on the effectiveness and the necessity of customer-retention strategy (Special issue in honour of emeritus professor Kiyoshi Okada),成城大學經濟研究,03874753,東京 : 成城大学経済学会,2002-11,158,,393-415,https://cir.nii.ac.jp/crid/1050001337473458688,