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. Dept. of Economics and Affan, Khalid",Towards an appraisal of tractorisation experience in rainlands of Sudan,,,1984,Monograph series (University of Khartoum),,,,https://cir.nii.ac.jp/crid/1130282268654692480