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 "Hübinger, Nils",The language portfolio and its contribution to learner autonomy and intrinsic motivation in the EFL,,GRIN,2011,Dokument,,9783656421290,,https://cir.nii.ac.jp/crid/1130000797624665344