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
"Streefland, Leen",Fractions in realistic mathematics education : a paradigm of developmental research,,Kluwer Academic Publishers,1991,Mathematics education library,,0792312821,,https://cir.nii.ac.jp/crid/1130282268825478912