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) Colm Harmon and Ian Walker,The marginal and average returns to schooling in the UK,European Economic Review,0014-2921,Elsevier BV,1999-04,43,4-6,879-887,https://cir.nii.ac.jp/crid/1360292620128509568,https://doi.org/10.1016/s0014-2921(98)00101-9