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
"Ofonagoro, Walter Ibekwe","The currency revolution in Southern Nigeria, 1880-1948",,"African Studies Center, University of California",1976,Occasional paper,,,,https://cir.nii.ac.jp/crid/1130282268635135744