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
"Okech, Benjamin A. and Mitullah, W. V. and Atieno, Rosemary",Towards an understanding of business systems in Kenya : the concept and research issues in metal products sub-sector,,"Institute for Development Studies, University of Nairobi",2002,Working paper,,,,https://cir.nii.ac.jp/crid/1130000797954518272