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
National Education Association of the United States. Dept. of Elementary School Principals,Instructional materials for elementary schools,,National Education Association,1956,"The national elementary principal : bulletin of the Department of Elementary School Principals, National Education Association",,,,https://cir.nii.ac.jp/crid/1130282273090778240