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, David","Indentured labor in the age of imperialism, 1834-1922",,Cambridge University Press,1995,Studies in comparative world history,,"0521485193,0521480477",,https://cir.nii.ac.jp/crid/1130000795328963712