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
"Blackstone, E. G. (Earl Glen)","Research studies in commercial education : reports of investigations as presented at the Iowa Research Conference on Commercial Education in March, 1926",,"College of Education and the College of Commerce, University of Iowa",1926,"University of Iowa, monographs in education",,,,https://cir.nii.ac.jp/crid/1130282271530993792