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
"Hopkins, John A. (John Abel)",Mexican farm wages and farm labor productivity,,"Office of Foreign Agricutural Relations, U.S. Dept. of Agriculture",1950,Foreign agriculture report,,,,https://cir.nii.ac.jp/crid/1130282270976991744