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
"Leven, Maurice","Income in the various states : its sources and distribution 1919, 1920 and 1921",,National Bureau of Economic Research,1925,"Publications of the National Bureau of Economic Research, Incorporated",,,,https://cir.nii.ac.jp/crid/1130282272188020352