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 "Wajnryb, Ruth",Classroom observation tasks : a resource book for language teachers and trainers,,Cambridge University Press,1992,Cambridge teacher training and development,,"9780521407229,0521403626",,https://cir.nii.ac.jp/crid/1130000794285254528