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
Boston Public Schools,"Statement of principles and procedure affecting grades VII-XII in the reorganized plan of secondary instruction with special reference to grades VII-IX, inclusive",,Printing Department,1921,School document,,,,https://cir.nii.ac.jp/crid/1130282271156441088