Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) John DUPLICE,Writing & Intrinsic vs. Extrinsic Motivation Among English Language Learners in Japan,Lingua,09159649,東京 : 上智大学言語教育研究センター,2018,,29,3-19,https://cir.nii.ac.jp/crid/1520290882071210112,