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 Federal Writers' Project of the Works Progress Administration for the State of North Dakota,North Dakota : a guide to the Northern Prairie State,2nd ed,Oxford University Press,1950,American guide series,,,,https://cir.nii.ac.jp/crid/1130282272759875456