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 "Christensen, Marge",Motivational English for at-risk students : a language arts course that works,,National Educational Service,1992,A+ practices,,187963919X,,https://cir.nii.ac.jp/crid/1130282272853400832