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
"Shaw, Eldon E. and Hopkins, John A.","Trends in employment in agriculture, 1909-36",,"Works progress administration, national research project",1938,Report,,,,https://cir.nii.ac.jp/crid/1130000795343392768