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 Association of Secondary School Principals (U.S.),The imperative needs of youth of secondary-school age,,National Association of Secondary School Principals,1947,Bulletin of the National Association of Secondary School Principals,,,,https://cir.nii.ac.jp/crid/1130000797752816640