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
"Abdulai, Y. Seyyid and OPEC Fund for International Development",Africa's external debt : an obstacle to economic recovery,,OPEC Fund for International Development,1990,Pamphlet series,,,,https://cir.nii.ac.jp/crid/1130282270822370688