著者名,タイトル,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Ebiringa Oforegbunam,Determinants of Foreign Direct Investment Inflow: A Focus on Nigeria,European Journal of Business and Management,,,2013,5,,41,https://cir.nii.ac.jp/crid/1370004235781656704,