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) ,Proficiency and speech vocabulary : A study on the NICT-JLE Corpus,Studies in Language and Text Analysis (University of Strathclyde Publishing),,,2008,,,11-20,https://cir.nii.ac.jp/crid/1010282257460635394,