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
"Wariboko, Waibinte E. (Waibinte Elekima)",Elem Kalabari of the Niger Delta : the transition from slave to produce trading under British imperialism,,Africa World Press,2014,Harriet Tubman series,,9781592219872,,https://cir.nii.ac.jp/crid/1130577121818325125