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 "Elliott, Charles Herbert","Variation in the achievements of pupils : a study of the achievements of pupils in the fifth and seventh grades, and in classes of different sizes",,AMS Press,1972,Contributions to education,,040455072X,,https://cir.nii.ac.jp/crid/1130000794869322880