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 School Mathematics Study Group Stanford University and Survey of Recent East European Mathematical Literature,Problem-solving processes of mentally retarded children,,National Council of Teachers of Mathematics,1975,Soviet studies in the psychology of learning and teaching mathematics,,,,https://cir.nii.ac.jp/crid/1130000797339995008