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
"Essien, Kwame and Falola, Toyin",Culture and customs of Sudan,,Greenwood Press,2009,Culture and customs of Africa,,9780313344381,,https://cir.nii.ac.jp/crid/1130000797289389952