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
"Akinwumi, Olayemi",Crises and conflicts in Nigeria : a political history since 1960,,Lit,2004,Geschichte,,382587494X,,https://cir.nii.ac.jp/crid/1130000796087594368