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
"Hayford, J. E. Casely (Joseph Ephraim Casely)",Ethiopia unbound : studies in race emancipation,2nd ed. / with a new introduction by F. Nnabuenyi Ugonna,Cass,1969,Cass library of African studies,,0714617539,,https://cir.nii.ac.jp/crid/1130000796860740224