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
"Abegunrin, Olayiwola",Nigeria and the struggle for the liberation of Zimbabwe : a study of foreign policy of an emerging nation,,Bethany Books,1992,Africa - the awakening giant,,9186702289,,https://cir.nii.ac.jp/crid/1130000797736071168