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
"Khartoum, University of. Development Studies and Research Centre and Ahmed, Ahmed El-Sheikh M",Structural analysis for the production function of the Sudan economy,,[s.n.],1986,Monograph series (University of Khartoum),,,,https://cir.nii.ac.jp/crid/1130282270568724992