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) Toyosaka Natsuki,Pragmatic task difficulty and L2 politeness strategies in disagreement situations across proficiency,Core,02869411,同志社大学英文学会Core編集部,2021-03-10,,49,45-85,https://cir.nii.ac.jp/crid/1390574181068810240,https://doi.org/10.14988/00028987