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
"Obidegwu, Chukwuma F. and Nziramasanga, Mudziviri",Copper and Zambia : an econometric analysis,,Lexington Books,1981,The Wharton econometric studies series,,0669046590,,https://cir.nii.ac.jp/crid/1130000795906571008