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
"Koester, U.",Kenya's economic policy with respect to the world coffee market,,"Institute for Development Studies, University of Nairobi",1978,Working paper,,,,https://cir.nii.ac.jp/crid/1130000796542465408