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 Alan D Moller,A study in the validation of proficiency tests of english as a foreigh language,,Supplied by the British Library Document Supply Centre,1981,British thesis service,,,,https://cir.nii.ac.jp/crid/1130282270501565312