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
"Beier, Ulli and Laoye, Timi",Yoruba poetry,,"Eckhard Breitinger, Bayreuth University",2002,Bayreuth African studies series,,3927510750,,https://cir.nii.ac.jp/crid/1130282271233856384