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
"Helmuth, John W. and Hadwiger, Don F. and Policy Studies Organization",International agricultural trade and market development policy in the 1990s,,Greenwood Press,1993,Contributions in economics and economic history,,0313286140,,https://cir.nii.ac.jp/crid/1130282269579661312