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
"Roumasset, James A. and University of the Philippines. Institute of Economic Development and Research","Sharecropping, production externalities and the theory of contracts",,"Institute of Economic Development and Research, School of Economics, University of the Philippines",1979,Discussion paper,,,,https://cir.nii.ac.jp/crid/1130000794371522944