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
"Ladipo, Duro",Ọba kò so (The king did not hang) : opera,,University of Ibadan. Institute of African Studies,1968,Occasional publication (University of Ibadan. Institute of African Studies),,,,https://cir.nii.ac.jp/crid/1130000796694166912