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
"Ballagh, James Curtis",White servitude in the Colony of Virginia : a study of the system of indentured labor in the American colonies,,Johnson Reprint Corp.,1973,Johns Hopkins University studies in historical and political science,,0384031463,,https://cir.nii.ac.jp/crid/1130000794199384192