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
"Northrup, Herbert Roof","Negro employment in land and air transport : a study of racial policies in the railroad, airline, trucking, and urban transit industries",,"Industrial Research Unit, Wharton School of Finance and Commerce, University of Pennsylvania",1971,Major Industrial Research Unit studies,,0812276329,,https://cir.nii.ac.jp/crid/1130282272336033920