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
"Frain, Hummel La Rue",An examination of earnings in certain standard machine-tool occupations in Philadelphia,,University of Pennsylvania Press,1929,Research studies,,,,https://cir.nii.ac.jp/crid/1130000793711747200