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
"Ukaga, Okechukwu and Ukiwo, Ukoha and Ibaba, Ibaba S. (Ibaba Samuel)","Natural resources, conflict, and sustainable development : lessons from the Niger Delta",,Routledge,2012,Routledge African studies,,9780415806916,,https://cir.nii.ac.jp/crid/1130282269812386688